Which of the actions listed should be taken by the engineer on watch when the general alarm is sounded continuously for 10 seconds?
A. Engine room ventilation should be started
B. Main engines should be secured
C. The fire pump should be started
D. The fixed CO2 system should be activated
旅游列车的宿营车()。(客值技)
A. 只能使用一辆
B. 根据需要确定使用辆数
C. 按包车人要求确定使用辆数
D. 由铁路局确定辆数
使用多重剃刀工具分割多个素材,鼠标移动到剪辑位臵,按下()键,同时单击鼠标左键,当前编辑线上所有轨道的素材被分割开来。
A. Shift
B. Alt
Ctrl
Del
从性质主讲,在己发现疫情流行情况下进行检疫称()。
A. 动物产地检疫
B. 宰前检疫
C. 市场检疫
D. 净化检疫