气体灭火系统的控制方式一般有自动控制、电气式的手动控制和机械应急操作控制()种。
参考答案:3
布洛芬缓释胶囊需进行
A.溶出度的测定B.释放度的测定C.片重差异检查D.崩解时限检查E.均匀度检查
The teacher took ____ the lesson where she stopped and finally she set_____ a few minutes to let us discuss it.
A.up; up
B.up; aside
C.out; about
D.on; back