【单选题】During fueling operations, which of the listed precautions should be taken when topping off fuel tanks?
A.
Reduce the pumping rate by closing the deck filling valve
B.
Close all overflow valves
C.
Place 5 gallon containers under all flange connections in the fuel line
D.
Reduce the pumping rate and sound tanks frequently as the level rises
【判断题】( )生产塑料制品时,注射压力过高,制件可能产生毛边、脱模困难等一系列问题。
【单选题】Which statement is FALSE concerning precautions during fueling operations?()
A.
All engines,motors,fans,etc. should be shut down when fueling
B.
All windows,doors,hatches,etc. should be closed
C.
A fire extinguisher should be kept nearby
D.
Fuel tanks should be topped off with no room for expansion
【判断题】路由器只接受源站或其他路由器的信息,属网络层的一种互联设备。