某个毕业生选择职业时，多个单位可供选择，举棋不定，这属于
A．双趋冲突
B．双避冲突
C．趋避冲突
D．多重趋避冲突
参考答案：D
His father is a worker, he often works _________ night. [ ]
A. at
B. in
C. for
D. during
耻骨和坐骨骨折的特有体征是（）
A.肢体长度不对称
B.会阴部瘀斑
C.骨盆分离试验阳性
D.腹腔内脏器损伤
E.挤压试验阳性
