三相电流不平衡的故障值是().
A.100A
B.150A
C.50A
D.30A
参考答案:B
Can you make sure _____________ the gold ring?
A.where Alice had put
B.where had Alice put
C.where Alice has put
D.where has Alice put
按照施工合同示范文本的规定,对合同双方有约束力的合同文件包括( )。
A.投标书及其附件
B.招标阶段对投标人质疑的书面解答
C.资格审查文件
D.履行合同过程中的变更协议
E.工程报价单