开标是由( )组织并支持、开标、唱标。
A．投标人B．项目经理C．评标人D．招标人
参考答案：D
Great changes ______ in our hometown in the past ten years.
A. have taken place B. have been taken place C. were taken place
对于现浇式钢筋混凝土框架结构，当在室内或土中时，其伸缩缝最大间距是（）m。
A.75
B.65
C.60
D.55
