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问题 判断题

带电作业在接近带电体的过程中，没有必要进行验电，因为作业本身就是带电作业。（）

答案

参考答案：错

单项选择题

如V1导联R／S≥1，V5导联R／S≤1常见于（）

A.左前分支传导阻滞

B.左心室肥大

C.右心室肥大

D.左束支传导阻滞

E.左后分支传导阻滞
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选择题
— _____ at this season of year in the north?
— It's much hotter than last year. The high temperature has lasted for days.

A.How are things going
B.How are you getting on
C.What's the weather like
D.What do you do
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