How must each storage tank for helicopter fuel on a ship be marked?（） ["DANGER - KEEP AWAY","DANGER - EXPLOSIVE VAPORS","DANGER - NO SMOKING","DANGER - FLAMMABLE LIQUID"]
If the Certificate of Inspection of a damaged tank barge has expired，which certificate may be issued to allow its movement to a repair facility? （） ["Change of employment","Permit to proceed","Application for inspection","Temporary Certificate of Inspectio"]
The intake ports of a two-strike/cycle diesel engine are opened and closed by the action of the （） ["camshaft","piston movement","exhaust valves","vertical drive"]
插入显示卡时（）。 ["不必断电","随便插入一个插槽","一边摇一边往下插","保证接触良好，不能一端高一端低"]
Valves in the cylinder head of a diesel engine are opened by the direct action of the（） ["exhaust pressure","valve spring pressure","rocker arm movement","wrist pin movement"]
整经的目的？生产上对整经工艺有哪些要求？
