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【单选题】
振荡环节Bode图的相频特性范围为0~( )。A.
90°
B.
-90°
C.
180°
D.
-180°
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举一反三
【单选题】It’s easy to find a good hotel in our city because we have _________ of them here.
A.
none
B.
few
C.
many
D.
each
【单选题】Many philosophers spend much of their time in contemplation.
A.
debating
B.
thinking
C.
writing
【单选题】关于空压机转向的表述,不正确的是
A.
转向不能相反，否则空压机的吸排将相反
B.
转向不能相反，否则兼作风扇的飞轮，将改变风向
C.
转向不能相反，否则对于强力润滑系统，油泵供油将相反，从而造成严重机损.
【单选题】Many a time ___ good advice.
A.
) gives me his
B.
) he gives me
C.
) I give him
D.
) does he give me
【单选题】It’s easy to repair a car if you have the _______.
A.
know-how
B.
business
C.
division
D.
gas
【单选题】【单选】关于空压机转向的表述,不正确的是
A.
转向不能相反，否则空压机的吸排将相反
B.
转向不能相反，否则兼作风扇的飞轮，将改变风向
C.
转向不能相反，否则对于强力润滑系统，油泵供油将相反，从而造成严重机损
【单选题】It’s easy to repair a car if you have the necessary ______.
A.
apprenticeship
B.
skills
C.
car
D.
friends
【单选题】Perhaps you think if someone is lonely, it’s their fault, or that since you’re so busy, you couldn’t possibly do anything to help. Loneliness can hit anyone from time to time, but if you’ve failed to ...
A.
not talk with him about his kids
B.
not show you are always busy
C.
let him help you with your job
D.
bring him a pet to play with
相关题目：
【单选题】Many philosophers spend much of their time in contemplation.
A.
debating
B.
thinking
C.
writing
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