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【单选题】
三相异步电动机的各种电气制动方法中,最节能的制动方法是( )。A.
回馈制动
B.
能耗制动
C.
反接制动
D.
机械制动
E.
：A
F.
：单选题
G.
0．在高压或大电流的情况下，电能表不能直接接入线路，需配合( )或电流互感器使用。
H.
电压互感器
I.
变压器
J.
电动机 K. 功率表
手机使用
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反馈参考答案：
举一反三
【单选题】What does Kristoff want to tell Olaf?
A.
He would melt in summer.
B.
Where he thinks Elsa is.
C.
Which hot country he should travel to.
【单选题】听力原文：M: When does the train leave? W: It leaves at twelve. Q: What does the man ask about? (20)
A.
Train
B.
Plane
C.
Ship
【单选题】The weather report says there will be a warming this week, with the temperature slowly rising from the 40s into the 60s.
A.
sincere
B.
intimate
C.
gradual
【单选题】听力原文：M：Could I ask you to do me a favor? W：That depends on what it is. Q：What does the woman mean? (3)
A.
She is depending on the man.
B.
She might be able to help the man.
C.
She will do anything the man asks.
D.
She can't hear what the man has said.
【单选题】下列有关材料标准的叙述,哪一个不正确?
A.
部颁标准不是全国性的指导技术文件,由各行业主管部门(或总局)发布,其代号按各部门名称而定。如建材标准代号为JC,建工标准代号为JG等
B.
国家标准是由国家标准局发布的全国性的指导技术文件,其代号为GB
C.
地方标准(DB)是地方主管部门发布的地方性指导技术文件
D.
企业标准仅适用于本企业,其代号为QB
【单选题】What do we know about the weather?
A.
It's still raining.
B.
The wind has stopped.
C.
The rain stopped.
【单选题】What does the man mean?
A.
He doesn't care about the weather.
B.
He'll go out after the rain stops.
C.
He wishes the rain would stop soon.
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