单项选择题
A.governor B.safety valve C.reducing valve D.feed water regulator
Remote control means that the system is being controlle...
单项选择题Remote control means that the system is being controlled by the operator who is situated （） from the system.
A.automatic B.local C.remote D.manual
Put in the engine turning gear Now examine thoroughly i...
单项选择题Put in the engine turning gear Now examine thoroughly inside the crankcase to （） that everything is correct.
A.make sure B.be sure C.assure D.believe
Pumps and fine filters are arranged （） with one as stan...
单项选择题Pumps and fine filters are arranged （） with one as standby.
A.in duplicate B.in double C.at twice D.for two
