工程师应在收到有关期中付款报表和证明文件后()天内向业主发出期中付款证书。
A.7
B.14
C.28
D.30
参考答案:C
—How do you like your trip to Hainan?
—________,I enjoyed it very much,although the weather was hot sometimes.
A.In addition
B.On the whole
C.In other words
D.On the other hand
重量法测定铁时,过滤Fe(OH)3沉淀应选用()。
A、快速定量滤纸
B、中速定量滤纸
C、慢速定量滤纸
D、玻璃砂芯坩埚