在吸气式火灾探测器采样管路采样管最末端采样孔加入试验烟,探测器或者其控制装置应在()s发出火灾报警信号。
A. 30
B. 60
C. 100
D. 120
The fuel oil system for a diesel engine can be considered in two parts---thefuel supply and the () systems
A. fuel combustion
B. fuel injection
C. fuel separating
The pilot station is ______ W of the breakwater.
A. To
B. Near
C. Distant
D. On
下列哪些内容不是汽车罐车装卸记录表中的内容?
A. 罐车编号
B. 押运员
C. 驾驶员
D. 罐箱编号