机车在正常运用时，无动力回送装置塞门必须（）。
A.关闭
B.开启
C.拔除
参考答案：A
---Is your present pension sufficient to cover your cost of living?
---Enough and to spare. _________ [ ]
A. I can’t complain.
B. Serve me right!
C. I’ve had enough of it.
D. I can’t be too particular.
某男，42岁。面白无华，精神萎靡，倦怠乏力，少气，自汗，舌淡苔白，脉虚。若属于脾气虚证，诊断意义最小的症状是：（）
A.纳呆
B.腹胀
C.口渴
D.便溏
E.消瘦
