智能电能表可存储（）天的日冻结数据。
A.10
B.30
C.62
D.120
参考答案：C
---How much do I have to ____you? I think it's a bit expensive.
--- I don’t think so . It’s only three hundred pounds.
A．pay
B．spend
C．cost
D．take
《建筑施工场界噪声限值》(GB 12523-90)的要求，工程施工中昼间打桩作业噪声限值为 ( )。
A．70 B．5 C．80 D．85
