题目内容

管理评审输出（管理评审报告)应着重在哪些方面？

查看答案

搜索结果不匹配？点我反馈

更多问题

什么是安全电压？安全电压分为哪几个等级？施工现场对安全电压的选用有哪些要求？

The students ______ the material before the exam.

A. went over
B. called on
C. looked into
D. ran across

Someone could have been killed.The traffic lights _______ repaired a lot sooner.

A. must be
B. must have
C. should be
D. should have been

简述监护人履行职责的基本原则。