更多"[单选题]NE"的相关试题:
[单选题]NEADS 从氮气发生系统提供氮气给：
A.中央燃油箱
B.左燃油箱
C.右燃油箱
D.左、中、右燃油箱
[多选题]WDM系统中，NE与NE之间互连应通过（ ）和外部的（ ）进行。
A.资源预留协议（RSVP）
B.多协议标记交换（MPLS）
C.光监控通道（OSC）
D.数据通信网络（DCN）
[单项选择]According to the text, learning to control your nervousness can _______.
A. enhance professional rewards
B. provoke sympathy in your audience
C. result in professional success
D. prevent you lying to an audience
[单项选择]According to Dr. Walker, which can describe the newly reported disease most appropriately
A. The newly reported disease holds a mortality rate of 50 percent.
B. The virus of the disease can be spread through contract with infected sweat.
C. Ninety percent of patients infected by the virus die of the disease.
D. The virus of the disease can only be carried by desert rats and primates.
[单选题]The diffserv approach to providing QoS in networks employs a small,well-defined set of building blocks from which you can build a variety of(________).Its aim is to define the differentiated services(DS)byte,the Type of Service(ToS)byte from the Internet Protocol Version 4( )and the Traffic Class byte from IP Version 6,and mark the standardized DS byte of the packet such that it receives a particular forwarding treatment,or per- hop behavior(PH
B),at each network node.The diffserv architecture provides a( )within which service providers can offer customers a range of network services,each differentiated based on performance.A customer can choose the( )level needed on a packet-by-packet basis by simply marking the packet's Differentiated Services Code Point(DSCP)field to a specific value.This ( ) specifies the PHB given to the packet within the service provider network。横线处应选（ ）
A.services
B.Users
C.networks
D.structures
[单项选择]It can be inferred from the passage that man' s need to know is chiefly important in that it ______.
A. allows the human race to progress technically
B. comprises both the physical and social sciences
C. demonstrates human adaptability
D. defines his essential humanity
[单项选择]There is one thing I dislike about him: he will never admit to ______ a mistake.
A. have made
B. having made
C. be made
D. make
[单选题]Without proper
safeguards,every part of a network is vulnerable to a security breach or
unauthorized activity from（本题）,competitors,or even employees.Many of
the organizations that manage their own
（72）network security and use
the Internet for more than just sending/receiving e-mails experience a
network（73）—and more than half of these companies do
not even know they were attacked.Smaller
（74）are often complacent,
having gained a false sense of security.They usually react to the last virus
or the most recent defacing of their website.But they are
trapped in a
situation where they do not have the necessary time and（75）
to spend on security.
A.intruders
B.terminals
C.hosts
D.users
[单选题]释放NE递质的是（ ）。
A.交感节前纤维
B.交感节后纤维
C.副交感节前纤维
D.副交感节后纤维
E.运动神经元
[单项选择]关于He-Ne激光的描述，错误的是（）
A. 工作物质为氦、氖
B. 属于气体激光
C. 属于离子激光
D. 波长632.8μm
E. 功率低
[单选题]The carpet has so many stains on it thatit needs__________
A.replace
B.to replace
C.being replaced
D.to be replaced
[单项选择]—Sorry, I forget to post the letter for you.
—Never mind, ______ it myself tonight.
[单项选择]I was advised to arrange for insurance ______ I needed medical treatment.
A. nevertheless
B. although
C. in case
D. so that
