【单选题】【消耗次数：1】
下列（）不属于异步电动机的调速方式。
①
变压调速
②
变转差率调速
③
变频调速
④
变极调速
参考答案：
复制
纠错
相关题目
随机题目
【单选题】
21.Sex education in primary school is still a big _____ in China today.
①
question
②
issue
③
problem
④
event
【单选题】
24.All the President’s Men _____ one of the important books for scholars who study the Watergate Scandal.
①
remains
②
remained
③
remain
④
is remaining
【单选题】
22.Plant your fig-tree _________ there is plenty of sunshine.
①
that
②
where
③
which
④
how
【单选题】
17.She is stupid, but it’s different _____ Mary; she is just lazy.
①
in case
②
in case of
③
in case that
④
in the case of
【单选题】
15.We would have arrived two hours ago _____the traffic jam.
①
because of
②
as a result of
③
despite
④
but for
【单选题】
17.Some tourists went to the beach; _____ explored the town.
①
the other
②
other
③
others
④
. another
【单选题】
8. The Labour Party ______ that the government give an explanation.
①
asked
②
demanded
③
told
④
said
【单选题】
2. He was _______ manager of the office.
①
appointed
②
objected
③
ensured
④
promoted
【单选题】
25. I can’t go—for one thing, I have no money, and ___, I have too much work.
①
what’s more
②
as well
③
for another
④
in addition