The supplement to the IOPP Certificate contains what type of data? （） The grades of cargo that an oil tanker is permitted to carry。 A checklist of the equipment installed for controlling the discharge of oil。 The trade routes upon which the vessel may operate。 A list of the underwriters who will assume financial responsibility in the event of an oil spill。
蛇是一类十分特化的爬行动物，很多骨骼都退化了，下面哪个骨骼消失了？（） 胸骨。 下颌骨。 肋骨。 寰椎。
If the diesel fuel vapors present are within the flammable range （）. the vapor air mixture is too rich to burn。 an explosion may occur if a source of ignition is present。 the vapor air mixture is too lean to bum the upper explosive。 limit has been exceeded。
亚洲矿藏资源的形成与分布和地质构造有什么关系？
A 30，000 DWT tanker is required to have an IOPP certificate when（） engaged in the coastwise trade。 going foreign。 calling at ports in another country signatory to MARPOL 73/78。 carrying cargoes listed in the MARPOL regulatio。
在紫荆的花结构中，位于最外侧的花瓣是：（）
