中国药典(2000年版)古蔡氏检砷法中，加入酸性氯化亚锡的作用是()

What is NOT a function of the scrubber of an inert gas system ________．

A.Cool the inert gas

B.Remove particulate matter like soot

C.Maintain pressure in the tanks

D.Remove chemical impurities

A、A vessel used to carry crude oil.

B、A vessel used to carry by-product.

C、A vessel used to carry chemical product.

D、A vessel used to carry liquefied natural gas.

The following statement ofinert gases is right except______

A) Inert gases are also called noble gases

B) Inert gases are mostlyinactive

C) Inert gases do not get involved in making compounds with other elements

D) Inert gases have their outer energy levels incompletely full ofvalence electrons

A.Cools the inert gas

B.Maintains the oxygen content at 5% by volume

C.Drains off static electricity in the inert gas

D.Maintains the water seal on the gas main

The deck water seal of the inert gas system ______．

A.Cools the inert gas and prevents soot from entering the cargo tanks

B.Acts as an emergency shutdown when inlet pressures exceed the safe working pressure

C.Prevents the backflow of hydrocarbon gasses into nonhazardous areas

D.Relieves sudden large overpressures in the system

A．nitrogen

B．nickel

C．neon

D．niobium

What is Neon Mountain？

A．An environmental group

B．A government agency

C．A mining corporation

D．A clothing company

A．gleamed

B．shined

C．twinkle

D．flashed