粘着磨损
参考答案：
摩擦副相对运动时，由于固相焊合作用的结果，造成金属耗损的现象
Bill wasn't happy about the delay of the report by Jason, and________.[ ]
A. I was neither
B. neither was I
C. I was either
D. either was I
2000年的盈亏临界点销售量是( )件。
A．5000
B．6500
C．11500
D．10000．
