不属于润滑“五定”内容的是（）
A、定时
B、定温
C、定质
D、定量
参考答案：B
. It is no good ___________ to come now. He is busy.
A．if you ask him
B．to ask him
C．asking him
D．that you ask him
1KB的存储空间中能存储______个汉字内码。
