2022鼻源性并发症题库试题试卷(7J)

1. [单选题]The opening of an exhaust valve on a modem, large, low-speed, main propulsion diesel engine may be actuated by （）.

A. direct action of cam shaft
B. compressed air pressure
C. hydraulic “push rods”
D. direct action of the main piston moving dow

2. [单选题]中药保留灌肠时，药液温度应保持在（）。

A. 33～35℃
B. 35～37℃
C. 37～39℃
D. 39～41℃
E. 41～43℃

查看答案&解析 查看所有试题

本文链接：https://www.51bdks.net/show/5zqdyl.html