单项选择题
Which is the most serious type of fracture?（）
A.Compound
B.Greenstick
C.Closed
D.Crack
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单项选择题
Which is NOT a symptom of traumatic shock?（）
A.Slow，deep breathing
B.Pale，cold skin
C.Weak，rapid pulse
D.Restlessness and anxiety -
单项选择题
Which is NOT a part of an anchor?（）
A.Bill
B.Devil's claw
C.Palm
D.Crown -
单项选择题
Which hazard probably would NOT be encountered when entering an empty but uncleaned fish hold?（）
A.Lack of oxygen
B.Methane gas
C.Hydrogen sulfide gas
D.Carbon monoxide
