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【单选题】
下面说法正确的是A.
光纤的损耗决定光纤通信系统的传输模式
B.
光纤的损耗决定光纤通信系统的传输距离
C.
光纤的损耗决定光纤通信系统的通信容量
D.
光纤的损耗决定光纤通信系统的传输速率
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【单选题】如果软件出现修改设计的严重错误，那么软件质量和可靠性就不能保证，应对软件进一步测试。如果经过测试，软件功能完善，错误率数据很少，并易于修改，可能的结果是______。 A) 软件的质量和可靠性可以接受 B) 所做的测试不充分 C) 先前做出的改正是错误的 D) A或者B
A.
B.
C.
D.
【简答题】ad. 特别,尤其 p__________
【简答题】p____ ad. 特别,尤其
【单选题】关于声现象，下列说法中正确的是 [ ]
A.
“闻其声而知其人”主要是根据声音的响度来判断的
B.
敲锣时用力越大，声音的音调越高
C.
我们能区分不同同学说话的声音，是因为他们的音色不同
D.
声音的大小由振动的频率决定
【单选题】Which of the following is likely an accurate projection for the workforce in the twenty-first century?
A.
The workforce will have to be more mobile than ever before because of the global
B.
rketplace.
C.
Continuing development of a global marketplace will require development of an
D.
ternational workforce.
E.
The technology required by the global marketplace will reduce the need for a
F.
lticultural workforce.
G.
As nations become self-sufficient, international business will decrease, eliminating the
【单选题】Which of the following is likely an accurate projection for the workforce in the twenty-first century?
A.
The workforce will have to be more mobile than ever before because of the global marketplace.
B.
Continuing development of a global marketplace will require development of an international workforce.
C.
The technology required by the global marketplace will reduce the need for a multicultural workforce.
D.
As nations become self-sufficient, international business will decrease, eliminating the need for a multinational workforce.
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