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【单选题】
两台直流发电机并联供电，为了均衡负载，测量负载电流，可以A.
在发电机的负线接入一个小电阻
B.
在发电机的负线接入一个大电阻
C.
在发电机的正线接入一个小电阻
D.
在发电机的正线接入一个大电阻
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【简答题】当你 想表达我们打算上歌唱课 时,你这么说: "______________________________________________________ _________________________ ___."
【单选题】“It is not good that the man should be alone; I will make him a helper fit for him.” What does “a helper fit for him” mean here? (Lec.31, 04’33’’)
A.
A wife likes her husband.
B.
A wife loves her husband.
C.
A wife is her husband’s clone.
D.
A wife complements her husband.
【单选题】Woman: Who is Jackie Tow? I have a parcel here for him. Jackie That's me.______ Woman Yes, please put your name here. Jackie Thank you. It must be the new pair of shoes I bought online.
A.
This is the receipt for it.
B.
Do you have the sender’s address?
C.
I have to check the package.
D.
Do I have to sign for it?
【单选题】I _____ here for him for 2 hours, but I still can not see him.
A.
have waited
B.
had waited
C.
have been waiting
D.
will wait
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