皮皮学，免费搜题
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搜题
【单选题】
设一同步发电机的电枢电流I落后于空载电势E 0 30°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（）A.
30°
B.
60°
C.
120°
D.
90°
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皮皮学刷刷变学霸
举一反三
【单选题】——I’m sorry to interrupt you. Please go on. ——Where was I? ——You ______ you didn’t like going shopping alone..
A.
had been saying
B.
had said
C.
said
D.
were saying
【单选题】— I didn’t buy the book _______ I didn’t have enough money. — You should take enough money with you when you go shopping.
A.
though
B.
because
C.
so
D.
if
【单选题】---Do you often go shopping ,Tina? ---No ,_____.I didn’t like shopping at all .
A.
always
B.
never
C.
sometimes
D.
usually
【单选题】—How are you feeling today? —______________. I think I can go shopping with you tomorrow.
A.
I’m feeling even worse.
B.
I didn’t feel well.
C.
Much better.
D.
Just so so.
【单选题】We used to go shopping on Sundays , but _______ for the past five weeks. A. I didn’t do that B. I hadn’t done that C. I don’t do that D. I haven’t done that
A.
B.
C.
D.
D
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