单项选择题
A.by which B.to which C.in which D.at which
Deck machinery, which is also known as hull machinery, ...
单项选择题Deck machinery, which is also known as hull machinery, includes all power driven equipment located （）the machinery spaces that is （） with the main propulsion plant.
A.inside；associated B.inside；not associated C.outside；associated D.outside；not associated
In boilers, besides maintaining the burner atomizers, a...
单项选择题In boilers, besides maintaining the burner atomizers, air diffuser vanes, fuel temperature, forced draft fan, fuel pump and other hardware in good condition, there are some adjustments on the （）that can produce a good flame for the most efficient operation.
A.fuel-air ratio B.compression ratio C.fuel rack D.viscosity index
The oil sludge is burnt in the （）on board I’ll show you...
单项选择题The oil sludge is burnt in the （）on board I’ll show you the ashes.
A.boiler B.main engine C.auxiliary engine D.incinerator
