【单选题】【消耗次数：1】
直流电动机的电磁转矩的大小与?成正比。
①
A．电机转速
②
B．主磁通和电枢电流
③
C．主磁通和转速
④
D．电压和转速
参考答案：
复制
纠错
相关题目
随机题目
【单选题】
Whenwespeaktopeople,weshouldbe_______.
①
aspoliteaspossible
②
aspoliteaspossibly
③
aspolitelyaspossible
④
aspolitelyaspossibly
【单选题】
When he came to,he found himself________on a chair,with his hands________back.
①
to sit;tying
②
sitting;tying
③
seating;tied
④
seated;tied
【单选题】
Where is my pen? I________it.
①
might lose
②
would have lost
③
should have lost
④
must have lost
【单选题】
I will ________here till you give me some money.
①
leave
②
not leave
③
come
④
return
【单选题】
The thief fell to the ground,his left foot________and blood________down from his mouth.
①
breaking;running
②
broken;running
③
breaking;run
④
broken;run
【单选题】
Ithinkscienceis________anJapanese.
①
muchimportant
②
important
③
muchmoreimportant
④
moremuchimportant
【单选题】
-Whats your brother like?
-He is________ .
①
adriver
②
very tall
③
myfriend
④
atschool
【单选题】
Now Mike isn’t here. He _______ Mr. Green’s. Perhaps he _______back in a few minutes.
①
went to ; is coming
②
has gone to ; will come
③
has been to ; will be
④
is going to ; has come
【单选题】
I went to the doctors yesterday. I had to wait for half an hour before he________see me.
①
can
②
may
③
might
④
could
【单选题】
Hisfatherbegantowork_______hewassevenyearsold.
①
asold as
②
asearlyas
③
assoonas
④
asmuchas