题目内容
（请给出正确答案）
[单选题]
Never _____ such a nice chair
A.has he seen
B.he has seen
C.saw he
D.he saw
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.has he seen
B.he has seen
C.saw he
D.he saw
如果结果不匹配，请 联系老师 获取答案
更多“Never _____ such a nice chair”相关的问题
Notuntilthismorning_yourL/C.Wecan_makeshipmentasstipulatedinthecontract.
A.wereceive,not
B.wehavereceived,never
C.didwereceive,hardly
D.hadwereceived,certainly
A．Continue to search for an insurance company that would assume the risk
B．Place special emphasis on the risk event to intensely manage that item and all interfacing items
C．Play down the risk and the team will find a means of overcoming any failure
D．Ignore the risk assessment because any assigned value is a point estimate which is never precisely the expected state of nature
A.她本想凶狠地回答一下说再也不想生孩子了，可话到了舌尖又收回去了，只是笑了笑。
B.她本想尖锐地回答一下说再也不想生孩子了，可话刚到舌尖她又及时抓住自己，只是笑了笑。
C.她本想狠狠地回敬一下说再也不想生孩子了，可话到嘴边又停住了，只是笑了笑。
The main reason we tend to focus on the (72) rather than the human side of the work is not because it’s more (73)，but because it’s easier to do．Getting the new disk drive installed is positively trivial compared to figuring out why Horace is in a blue funk(恐惧)or why Susan is dissatisfied with the company after only a few months．Human interactions are complicated and never very crisp(干脆的，干净利落的)and clean in their effects，but they matter more than any other aspect of the work．
If you find yourself concentrating on the (74) rather than the (75) ．you’re like the vaudeville character(杂耍人物)who loses his keys on a dark street and looks for them on the adjacent street because，as he explains，“The light is better there!”
(71)
A．creators
B．innovators
C．appliers
D．inventors
Public Key Infrastructure(PKI) service providers offer organizations fully integrated PKI-managed services designed to secure Intranet, Extranet, Virtual Private Network(VPN), and e-commerce applications. PKI solutions can enable a number of security services, including strong authentication and non-repudiation of transactions.eToken enables the users of PKI systems to generate and store(101)and digital certificates inside the token, creating a secure environment and allowing full portability and maximum ease of use. eToken Pro can also perform. sensitive on-chip(102)operations, ensuring that users' keys axe never exposed to the PC environment, eToken eliminates the need to store(103)and keys on a hard disk or browser file, or to transmit them across the Internet/Extranet; assuring peace-of-mind and confidence during online communications.A digital signature is created using the private key of an individual to ensure the Validity of his request. This technology can be used to guarantee(104)of various transactions. The strength of either the authentication level or the digital signature relies on the level of protection offered to the private key. eToken Pro offers the maximum level of security, since it enables the use of the private key for signing and authenticating inside the eToken.The most secure use of authentication involves enclosing at least one certificate with every signed message. The message(105)verifies the certificate using the CA's public key. If the sender's public key is legitimate, the recipient verifies the message's signature. Digital signatures created with a private key are verified with the digital certificate containing the public key.
A．private keys
B．public keys
C．authentication codes
D．message digests
People are indulging in an illusion whenever they find themselves explaining at a cocktail(鸡尾酒)party，say, that the are “in computers，”or“ in telecommunications，”or “in electronic funds transfer”. The implication is that they are part of the high-tech world. Just between us，they usually aren't. The researchers who made fundamental breakthroughs in those areas are in a high-tech business. The rest of us are （71）of their work. We use computers and other new technology components to develop our products or to
organize our affairs. Because we go about this work in teams and projects and other tightly knit working
group（紧密联系在一起的工作小组），we are mostly in the human communication business. Our successes stem from good human
interactions by all participants in the effort，and our failures stem from poor human interactions.
The main reason we tend to focus on the（72）rather than the human side of work is not
because it’s more (73)，but because it's easier to do. Getting the new disk drive installed
is positively trivial compared to
figurine out why Horace is in a blue funk(恐惧）or why Susan is dissatisfied with the company aver only a few months. Human interactions are complicated
and never very crisp（干脆的，干净利落的）and clean in their effects, but they matter more than any other aspect of the work.
If you find yourself concentrating on the（74）rather than the（75）．you're like the vaudeville character （杂耍人物）who loses his Keys on a dark street and looks for them on the adjacent street because，as he explains，“The light is better there!”
(71)
A. creators
B. innovators
C.appliers
D. inventors
The main reason we tend to focus on the （72） rather than the human side of the work is not because it's more （73） , but because it's easier to do. Getting the new disk drive installed is positively trivial compared to figuring out why Horace is in a blue funk(恐惧) or why Susan is dissatisfied with the company after only a few months. Human interactions are complicated and never very crisp(干脆的,干净利落的) and clean in their effects, but they matter more than any other aspect of the work.
If you find yourself concentrating on the （74） rather than the （75）, you're like the vaudeville character(杂耍人物) who loses his keys on a dark street and looks for them on the adjacent street because, as he explains, "The light is better there!".
（71）
A. creators
B. innovators
C. appliers
D. inventors
（72）
A. technical
B. classical
C. social
D. societal
（73）
A. trivial
B. crucial
C. minor
D. insignificant
（74）
A. technology
B. sociology
C. physiology
D. astronomy
（75）
A. technology
B. sociology
C. physiology
D. astronomy
【A popular service that has attercted the interest of companies and has home users alike is the sending of voice signals over an IP-based network, such as the Internet. The practice of making telephone calls over the internet has had a number of different names, including packet voice, voice over packet, voice over the internet, internet telephone, and Voice over Ip（Voip）. But it appears the industry has settled on the term”Voice ove IP” in reference to the internet protocol, which controls the transfer of data over the internet. There are currently three ways to deliver VoIp to users, the first technique is found at the corporate level. Many companies are offering VoIP systerms that operate over a local area network. These systems involve a fair amount of equipment, such as VoIP servers, special IP-enabled telephones, and routers that can direct telephone calls. Today a large portion of corporate sites have converted their older internal telephone systems to VoIP systems that opreate over a LAN, thus converging two systems into one. A second common solution is the one often encountered at home. Using existing telephones, a special converter is added between the telephone and a high speed internet（DSL or cable modem）connection. The converter digitizes the voice signal and creates a stream of packets that are then sent over an ip connection.The third technique involves smart cell phones. Never cell technologies are all packet-based, thus requiring a telephone call to be converted to digital packets and sending those packets over IP networks.】
From the paragraph above，a popular service that has attracetd the interest of companies and home users,is termed as （） . The data transfer over the Internet is controlled by the （） . At corporate level, many companies have replaced their older internal telephone systerms with （） that oprerate over a local area network.
A、voice over the internet B、voice over packet C、Voice over IP D、internet telephony A、packet B、internet protocol C、industry D、VoIp servers A、VoIP systems B、IP-enablde telephones C、VoIP servers D、routers
A. SimpleB. HardC. ComplexD. duplicatedA.happensB.existsC.stopsD.startsA. startsB.continuesC.appearsD.stopsA.practicalB.usefulC.beautifulD.uglyA.impracticalB.perfectC.time-wastingD.practical
定义根节点深度为1，有n个元素的完全二叉树的深度是()
A.D(n)=log2(n)
B.D(n)=1+log2(n)
C.D(n)=n+log2(n)
D.D(n)=1+n*log2(n)
