单项选择题
A.Apply ice-cold compress and renew every 4 hours B.Commence artificial respiration immediately C.Give enema D.Pass catheter into bladder
After reporting a casualty to a mobile offshore drillin...
单项选择题After reporting a casualty to a mobile offshore drilling unit，which record must be retained on board? （）
A.Record of drafts B.Hull reports C.Anchor record D.Machinery repair book
After putting on a self-contained breathing apparatus，y...
单项选择题After putting on a self-contained breathing apparatus，you open the air supply and hear a continuous ringing of a bell. What does this mean? （）
A.The unit is working properly B.The face mask is not sealed properly C.The air bottle needs to be refilled D.The air supply hose has a leak
According to the Chemical Data Guide，epichlorohydrin is...
单项选择题According to the Chemical Data Guide，epichlorohydrin is a(n)（）.
A.corrosive B.class B poison C.oxidizer D.explosive
