碰垫液压系统发生低压报警时,会发生()。
A.液压泵异常发热
B.液压管路振动
C.液压泵关断
D.液压泵电机异常发热
参考答案:C
"Freeze, you guy! ______, and I'll shoot you." an old man with a gun in hand shouted at me.[ ]
A. If you go for one more step
B. Going for one more step
C. One more step
D. You going for one more step
SSRIs的作用机制是()
A.抑制5-HT的再撷取
B.抑制NE的再撷取
C.抑制DA的再撷取
D.同时抑制5HT及NE的再撷取
E.同时抑制5-HT及DA的再撷取