【单选题】【消耗次数：1】
I ________ here since I moved here.
①
will work
②
worked
③
work
④
have been working
参考答案：
复制
纠错
相关题目
【单选题】
I came to?Beijing?in 1991 and have been ?[填空] here ever since.
①
live
②
lives
③
lived
④
living
【单选题】
I’m writing to you from London in a new flat. I _______ here since 2005.
①
was
②
have been
③
is being
【单选题】
_______I like most is_______I can have a party after work.
①
That,that
②
What, that
③
What, what
【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
【单选题】
Since you have already come, you _____ stay here for a couple of days.
①
might well
②
might as well
③
might have to
④
might
【单选题】
We have been hearing ______ accounts of your work.
①
favoured
②
favourable
③
favorite
④
favouring
【单选题】
A： How long have you been here?B： Not for long, only about five minutes. Alice and Monica ______ here with me.
①
have walked
②
had walked
③
were walking
④
walked
【单选题】
_______ , I will help you with your work.
①
If I am possible
②
If it possible
③
If possible
④
Possible
随机题目
【单选题】
要提高并联在电网上运行的发电机静态稳定性，可以_____：?
①
增加励磁电流,增加原动机输入功率；
②
减少励磁电流，减少原动机输入功率；
③
增加励?磁电流，减少原动机输入功率
【单选题】
同步发电机带感性负载单机运行，端电压要比相同励磁电流下的空载电压低，这是因? 为_____：?
①
饱和的影响；
②
有电枢反应去磁作用和漏阻抗的存在；
③
功角增大了；
【单选题】
设一台隐极同步发电机的电枢电流I落后于空载电势E030°时间相位角，则电? 枢反应磁场与转子励磁磁场轴线间的空间相位角为_____。
①
30°；?
②
60°；?
③
120°；
【单选题】
一台单相降压变压器，由于副边负载的增加，使输出电压降低很多，为使输出电压保? 持在额定值附近，可以在维持原边电压不变的情况下，改变原边绕组匝数来调压，这?时应适当_____。
①
增加原边匝数；?
②
减少原边匝数;
③
不进行任何改变。