用兆欧表测定电缆的绝缘电阻时，吸收比是表明绝缘体的（）和介质变坏情况。
A、破坏程度
B、受潮程度
C、击穿程度
D、老化程度
参考答案：B
Too much smoking and drinking ________ him greatly, which meant bad living habits had an
________ on his health.[ ]
A. affect; effect
B. affected; effect
C. affected; effects
D. affect; effects
以下一般是按照工程成本核算对象设置的是( )。
A．预提费用明细账
B．材料出入库明细账
C．待摊费用明细账
D．工程成本明细账
