脚手架应具有足够的强度、刚度和稳定性，施工均布活载标准为：装饰脚手架2kN/m2；结构脚手架3kN/m2。( )
参考答案：对
He likes to play basketball very much. He wants to make ______ by ______ basketball in the future. [ ]
A. living; playing
B. a living; playing
C. a living; play
如果项目在经济意义上是可行的，则其净现值（NPV）的值应该（）。
A.大于0
B.小于0
C.等于0
D.具体项目具体分析
