皮皮学，免费搜题
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【单选题】
故障车维修时,绝对不可以破坏或拆除( ),否则可能会导致严重的电烧伤、休克或触电。A.
驱动电机皮带
B.
动力电池箱盖
C.
维修开关
D.
整车控制器
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】I bought a new car last month, but()my old car yet.
A.
did not sell
B.
have not sold
C.
had not sold
【单选题】I finally sold my _________________ car and bought a new one.
A.
ten-years old
B.
ten-year old
C.
ten-year olds
D.
ten year old
【单选题】a. I bought a new car last month. b. ____? What model did you go for?
A.
Do you
B.
Don't you
C.
Did you
D.
Didn't you
【单选题】a. I bought a new car last month. b. ? What model did you go for?
A.
Do you
B.
Don't you
C.
Did you
【单选题】一个圆形线环,它的一半放在一分布在方形区域的匀强磁场 B 中,另一半位于磁场之外,如图所示.磁场B 的方向垂直指向纸内.欲使圆线环中产生逆时针方向的感应电流,应使
A.
线环向右平移．
B.
线环向上平移．
C.
线环向左平移．
D.
磁场强度减弱．
【简答题】钢的热处理就是对钢进行_____、______、______的处理工艺。
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