Reid vapor pressure is（）.

Using an inert gas system on a tanker has which advantage(s)? （）

Releasing oil from the sea anchor of a survival craft may（）.

Sour crude oil（）.

The designations A，B，C，D and E grades of cargo refer to the（）.

The purpose of inert gas systems aboard tankers is to（）.

The blowers of an inert gas generation system aboard a tanker，will be automatically secured if（）.

The purpose of the deck seal in an inert gas system is to prevent（）.

The fresh air intake of the inert gas system（）.

Regulations require that pumprooms on tank vessels carrying grade C liquid cargo with machinery spaces below the freeboard deck be ventilated with（）.