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【简答题】
简述等离子弧切割设备哪几部分构成?
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
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【简答题】继电保护的基本要求?
【单选题】She ______ by finding me a specially trained dog, which actually ______. [ ]
A.
helped me; cheered me
B.
helped me out; cheered me up
C.
helped me up; cheered me up
D.
helped me out; cheered me out
【单选题】She wasn’t very polite to me but I helped her.
A.
any way
B.
anyway
C.
at any way
D.
in a way
【简答题】对继电保护的基本要求？
【简答题】根据对继电保护的基本要求试分析供电线路过电流保护和电流速断保护有哪些相同之处?有哪些不同之处?
【单选题】听力原文：The medicine the doctor gave me seemed to have helped, but it's me awfully drowsy. What's wrong with the medicine the doctor gave me?
A.
The medicine doesn't work.
B.
The medicine has nothing wrong.
C.
The medicine makes me sleepy.
【单选题】— Mary told me she would meet me at yesterday’s party. But she didn’t turn up. — It is a pity that she broke her ________ .
A.
promise
B.
heart
C.
habit
D.
rule
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