单项选择题
If separating effect is not good, which measure should be taken （）
A.working at intervals and properly heating B.warming up to 70℃, increase water supply flow C.improving impulse of water supply D.reducing water supply flow
单项选择题 Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
单项选择题 Under MARPOL Code the ship to which it applies has to carry （）
单项选择题 Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
