The component in an inert gas system used for cleaning the gas of solid and sulphur combustion products，while simultaneously cooling the inert gas，is called the（）. ["filter","cooler","scrubber","purifier"]
阿尔卑斯山南坡和北坡自然带的垂直分布高度有何不同？为什么？
In order to find out which lifeboat you are assigned, you should look at the （）. ["Certificate of Inspection","Station Bill","Ships Articles","Fire Control Pla"]
发光二极管在使用时，应（）。 ["串接适当的电阻进行限流","可不用串接电阻，因发光二极管本身具有限流作用","必须并联适当的电阻进行分流","用稳压二极管串联进行稳压后供发光二极管使用"]
如果放映遮幅格式影片选用宽银幕格式放映通道进行放映，其结果是画面宽高比不对，即影像物体变高。
干部员工要增强“有权必有责，（）”的意识，熟悉监管要求，主动接受监督，乐于接受监督，规范行使权力。
