金属部件与金属部件的连接发热判定为危急缺陷的判据有（）。 A.

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问题多项选择题

金属部件与金属部件的连接发热判定为危急缺陷的判据有（）。

A.热点温度＞110℃

B.热点温度＞130℃

C.相对温差≥80%

D.相对温差≥95%

答案

参考答案：B, D

选择题

Recently, to maintain national balance, the Chinese government has _______ a policy of encouraging

college graduates to take positions in rural areas. [ ]

A. adopted

B. admitted

C. adapted

D. admired

单项选择题

She is（）only accountant in my son's company.

A.a

B.an

C.the