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【简答题】
根据调整元件与负载的连接方式,稳压电路大体可分为 型和 型两种。
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【单选题】()驱动系统的结构特点是可以单独使用发动机或电动机作为动力源,也可以同时使用电动机和发动机作为动力源驱动汽车行驶。
A.
串联式
B.
并联式
C.
混联式
D.
复合式
【简答题】At the beginning of this century, medical scientists made an interesting discovery; we are built not just of flesh and blood but also of time. They were to show that we all have “a body clock” us, whi...
【单选题】Afternoon tea is ______ in the dining room from 3 to 5 p. m. every day. [ ]
A.
served
B.
burned
C.
cooked
D.
eaten
【单选题】All the children had a good time at Mark’s birthday party.
A.
help each other
B.
enjoyed themselves
C.
had a wonderful time
D.
have a big dinner
【单选题】Traditional afternoon tea is typically served between _______.
A.
4 p.m. and 6 p.m.
B.
2 p.m. and 4 p.m.
C.
3 p.m. and 5 p.m.
D.
4 p.m. and 5 p.m.
【单选题】It's years we met each other at a party in Qingdao .
A.
when
B.
that
C.
before
D.
since
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