固定设备的静止接合部位无油迹，转动及滑动部位允许有油迹，擦干后（）分钟不成滴。
参考答案：30
—How well Susan dances! I can't believe my eyes.
—______. [ ]
A. So she does
B. So does she
C. So did she
D. So she did
食物中毒：蘑菇
A．矿难：煤炭
B．高血压：血压计
C．球场骚乱：警察
D．海啸：地震
