不属于工程招标投标的主要工作的是( )。
A.编制招标文件B.催交C.评标D.签订合同
参考答案:B
如果a<0,b>0,那么ab( )0。
Modem equipment and no smoking are two of the things I like _____ working here. [ ]
A. with
B. over
C. at
D. about