单项选择题
Which is the most serious type of fracture?（）
A.Compound B.Greenstick C.Closed D.Crack
单项选择题 Which is NOT a symptom of traumatic shock?（）
单项选择题 Which is NOT a part of an anchor?（）
单项选择题 Which hazard probably would NOT be encountered when entering an empty but uncleaned fish hold?（）
