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[单选题]

All primary school children,including those in independent schools,were given milk free（)charge until 1970.

A.for

B.to

C.without

D.of

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更多“All primary school children,in…”相关的问题

第1题

●SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connec

tions between IBM equipment ．A varietion of the (71) protocol called NRM is essentially the same as SDLC．SDLC is (72) protocol like HDLC , Frame. Relay or X．25．An SDLC network is made up of (73) that controls all communications , and (74) ．It is capable of (75) operation, but almost all practical applications are strictly half duplex．

(71) A．HDLC

B．Frame. Relay

C．X．25

D．X．21

(72) A．a peer to peer

B．a point-to-point

C．not a peer to peer

D．a peer to peers

(73) A．a primary station

B．one or more primary stations

C．a secondary station

D．one or more secondary stations

(74) A．a primary station

B．one or more primary stations

C．a secondary station

D．one or more secondary stations

(75) A．half duplex

B．full duplex

C．half or full duplex

D．half and full duplex

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第2题

The data station usually means a（71)unit that provides data for transmission, that accepts

The data station usually means a(71)unit that provides data for transmission, that accepts transmitted data, and that performs all functions necessary for communication with another functional unit. Data stations may be divided into two kinds, the primary stations and the secondary stations, (72)control functions.In(73)data link control, the primary station is the data station that supports the primary control functions of the data link, generates commands to be transmitted, and interprets received responses. Specific responsibilities assigned to the primary station include initialization of control signal interchange, organization of data flow and actions regarding error control and error recovery functions. The secondary station executes data link control functions as (74)by the primary station, interprets received commands and (75) responses to be transmitted.

A．performance

B．functional

C．capacity

D．quality

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第3题

The primary advantages of a Client/Server system arise from splitting the processing betwe

en the client system and the database server. Since the bulk of the database processing is done on the back-end, the speed of the DBMS isn't tied to the speed of the(31).The major disadvantage of Client/Server system is the increased cost of(32) and support personnel who maintain the database server. There is also the issue of(33)with so many parts comprising the entire C/S system; Murphy's Law can kick in-the more pieces that compose the system, the more pieces that can fail. It's also harder to track down problems when the system(34). And it can initially take longer to get all the components set up and working together. All this is compounded by the general lack of experience and expertise of potential support personnel and programmers, due to the relative newness of the technology. As C/S system become more common, this problem should abate.Therefore the C/S system is more(35).

A．network

B．operating system

C．personal computer

D．workstation

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第4题

The five primary modes of transportation are rail，road，pipeline，water，and air．Each has dif

The five primary modes of transportation are rail，road，pipeline，water，and air． Each has different economic and service characteristics．【B1】offers the cost—efiective，energy—efficient transport of large quantities of goods over long distances．【B2】offers more flexibility and versatility to the shipper than virtually any other forms of transportation．【B3】are primarily used to move petroleum，natural gas，and chemicals．For suitable commodities，pipelines are the most efficient mode of transport．They offer a closed system with little risk of loss or damage to the products moved and extremely low cost．The most expensive of all the modes，【B4】offers the fast service but at a relative high price．【B5】 occurs on inland waterways and oceans．Though slower than other modes，this form. of movement is also relativelv inexpensive．

【B1】

A．Rail transport

B．Road transport

C．Truck transport

D．Air transport

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第5题

根据以下资料回答 41～45 题 The five primary modes of transportation are rail, road, pipe

根据以下资料回答 41～45 题

The five primary modes of transportation are rail, road, pipeline, water, and air. Each has different economic and service characteristics. (41 )offers the cost -effective, energy- efficient transport of large quantities of goods over long distances. (42 )offers more flexibility and versatility to the shipper than Virtually any other forms of transportation. (43 ) are primarily used to move petroleum, natural gas, and chemicals. For suitable commodities, pipelines are the most efficient mode of transport. They offer a closed system with little risk of loss or damage to the products moved and extremely low cost. The most expensive of all the modes, (44 ) offers the fast service but at a relative high price. (45 )occurs on inland waterways and oceans. Though slower han other modes, this form. of movement is also relatively inexpensive.

第 41 题

A．Rail transport

B．Road transport

C．Truck transport

D．Air transport

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第6题

● Management information systems form. a bedrock of IT use in the public sector. They are

therefore found in all sections ofthe public sector and in all countries..Of course, different people use the term "management information system" differently. The term should therefore not form. the basis for arguments about (71) an MIS is and is not. So long as one and those with whom one works understand and agree on a definition, that is good enough.Similarly, when dealing with written material, one needs to be able to(72)and communicate, not get locked into doctrinal debate,

Many public service providers have developed management information systems to morutor and control the services that they provide. Both the US (73) UK Social Security agencies have developed MIS to report on the welfare payments and services that they provide . The British public healthcare system has also been a major investor in MIS as it 1ries to control healthcare costs and simultaneously improve delivery standards .

Individual schools can also(74)use of MIS. Hobmoor Junior and Infant School, a public school in Birmingham, UK, introduced a computerised attendance system to produce MIS reports that monitor pupil attendance. This improved the Principal's ability to understand and control absence patterns, resulting in a 2.5 per cent (75) in attendance rates.

(71) A.what

B.that

C.which

D.this

(72) A.look

B.understand

C.get

D.familar

(73) A.with

B.and

C.also

D.to

(74) A.make

B.get

C.take

D.go

(75) A.pass

B.increase

C.decrease

D.rise

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第7题

●Ravi, like many project （71) ，had studied the waterfall model of software development as

●Ravi, like many project (71) ，had studied the waterfall model of software development as the primary software life-cycle (72) ．He was all set to use it for an upcoming project, his first assignment． However, Ravi found that the waterfall model could not be used because the customer wanted the software delivered in stages, something that implied that the system had to be delivered and built in (73) and not as (74) ．The situation in many other projects is not very different． The real world rarely presents a problem in which a standard process, or the process used in a previous project, is the best choice．To be the most suitable, an existing process must be． (75) to the new problem．A development process, even after tailoring, generally cannot handle change requests． To accommodate change requests without losing control of the project, you must supplement the development process with a requirement change management process．

(71) A． customers B．managers C．users D．administrators

(72) A．activity B．procedure C．process D． progress

(73) A．parts B．modules C．software D．a whole

(74) A．parts B．modules C．software D．a whole

(75) A．modified B．used C．suited D． tailored

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第8题

下列选项中，用于设置主键的关键字是（)。

A.FOREIGN KEY

B.PRIMARY KEY

C.NOT NULL

D.UNIQUE