【简答题】阅读《还是多想想明天》,完成23-27题。(12分) 不知从何时起,“别管以后”成了时髦。闲谈可以莫谈国事,一辈子甭管两辈子事,当官者信奉“有权不用过期作废”,大款们信奉“今朝有酒今朝醉”。一曲“别管以后将如何结束,至少我们还有梦”,更是让灯红酒绿的男女们唱得如痴如醉,梦幻人生。 翻翻斑驳的历史,有时会揭开历史的疮疤,重温一下过去,可以找到今天的影子。法国国王路易十六曾叫嚣过:“哪怕我死后洪水滔天...
【判断题】交流伺服电动机按转速是否变化可分为同步伺服电动机和异步伺服电动机。
【单选题】We can connect two inductors L1 and L2 in series to get a larger inductor. Compare the total inductance L with L1 + L2, which statement is true?
D.
All the 3 results are possible
【多选题】In ACT 3, Philip says, "What a day!" What does it mean?
A.
That person had a really good day.
B.
That person had a busy day.
C.
That person had a bad day.
D.
This expression doesn't mean anything.
【简答题】For fig a, the equivalent inductance is ( )mh For fig b, the equivalent inductance is ( )μh