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【单选题】
电路如图所示,已知 C1=2C2,C1充过电,电压为U,C2未充电,如果将开关S闭合,那么电容器C1两端的电压为( )
A.
1/2U
B.
1/3U
C.
2/3U
D.
U
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参考答案:
举一反三
【简答题】14-2 在稳态短路时,同步发电机的短路电流为什么不是很大?而在直流电机与变压器中情况却不一样,为什么?
【单选题】Why does the author mention that museums and art collectors buy children's book art?
A.
to stress the range of subjects covered in illustrations
B.
to question the value of the art that appears in children's books
C.
to show that children's literature has become very successful
D.
to argue that illustrators should focus on adult audiences
【单选题】18.
A.
A bird-shooting trip.
B.
A visit to Europe .
C.
A television talk show.
D.
None
【简答题】假设 Guess 公司只能投资于项目 S (短期)和项目 L (长期)中的一个。公司的资本成本率为 10% ,两个项目的期望未来现金流量如表 7-14 所示。 要求:分别计算两个项目的净现值和内含报酬率,并比较哪个项目更优。
【简答题】students have read the book. complete / mention / aim at / a large number of / begin to
【单选题】——in plain language, the book is easy to read.
A.
Written
B.
Writing
C.
Wrote
【单选题】轻度肥胖的标准为小儿体重超过同性别同身高正常儿均值的
A.
10~19%
B.
20~29%
C.
30~39%
D.
40~49%
E.
50~59%
【判断题】7号信令系统的第三级,信令网络级,只对应于OSI的层三的一部分。另一部分层三的功能,是由7号信令系统的第四级,用户部分中的SCCP完成的。
A.
正确
B.
错误
【单选题】Why are readers guessing wildly about the next book?
A.
Because they have waited eagerly for a long time.
B.
Because Professor Lupin will die soon.
C.
Because Ron is a relative of Harry ’ s.
D.
Because the next book will be better than the previous ones.
【判断题】在OSI/RM中,每一层的真正功能是为其上一层提供服务。( )
A.
正确
B.
错误
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