<ul id="ywgmq"></ul>

<kbd id="ywgmq"><pre id="ywgmq"></pre></kbd><samp id="ywgmq"><tbody id="ywgmq"></tbody></samp>

<kbd id="ywgmq"><center id="ywgmq"></center></kbd>

<kbd id="ywgmq"><center id="ywgmq"></center></kbd>

<th id="ywgmq"><menu id="ywgmq"></menu></th>

<samp id="ywgmq"><pre id="ywgmq"></pre></samp>

單項(xiàng)選擇題

What is used to test a tank for oxygen content?（）

A.Combustible gas indicator
B.Vapor indicator
C.Atmosphere analyzer kit
D.None of the above

在線練習(xí)

你可能感興趣的試題

單項(xiàng)選擇題

What is the proper first aid for LPG in the eye? （）

A.Apply an ice pack to the eye
B.Keep the eyelid closed
C.Flush the eye with plenty of water
D.Rub the eye area clean

單項(xiàng)選擇題

Upon release to the atmosphere，LFG readily（）.

A.vaporizes
B.attacks caustically
C.rises
D.attacks corrosively

<kbd id="giuiu"><center id="giuiu"></center></kbd>