单项选择题
A.craned out B.rolled out C.lifted out D.turned out
In order to increase the wearing resistance, the cylind...
单项选择题In order to increase the wearing resistance, the cylinder liner surfaces are sometimes （）.
A.aluminum-plated B.bronze-plated C.zinc-plated D.chromium-plated
In order to ensure the safety of the ship and its equip...
单项选择题In order to ensure the safety of the ship and its equipment during UMS operation, certain essential functions （）.
A.must be provided B.may be provided C.have provided D.can be provided
In order to ensure perfect atomization, the fuel oil （）...
单项选择题In order to ensure perfect atomization, the fuel oil （） before injection.
A.has to be cooled B.has heated C.has preheated D.has to be preheated
