一般情况下，脱脂点数越高，脱脂效果越好。
参考答案：错
The person in charge of the meeting asked the people present to sit ______ together and listen _______.[ ]
A. closely; close
B. close; closely
C. close; close
D. closely; closely
在测量零件布氏硬度时，试样厚度应不小于压痕深度的（）倍。
A．3
B．10
C．8
