混凝土工程在使用中对水泥出厂超过( )时，应进行复验，并按复验结果使用。
A．15d
B．1个月
C．2个月
D．3个月
参考答案：D
用括号内单词的适当形式填空
1. How much do these potatoes ______(weight)?
2. Large ______ (amount)of money are being used in our company at the moment.
3. The house still needed a lot of work, but at ______ (1ess)the kitchen wa8 finished.
4. Your English is much better, but there’s still room for ______ (improve).
5. I wonder if I'll be ______(fitful) enough to take part in the race.
工程项目的绩效评价的特征不包括( )。
A．敏感性
B．动态性
C．多维性
D．多因性
