有关髋关节前后位摄影的叙述，正确的是（） A.双足内收200 B._爱下问搜题

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问题单项选择题 A1/A2型题

有关髋关节前后位摄影的叙述，正确的是（）

A.双足内收200

B.双足外旋200

C.双足尖垂直向上

D.双下肢稍内旋足尖并拢

E.双足跟并拢足尖自然外旋

答案

参考答案：D

选择题

Jack wasn't saying anything, but the teacher smiled at him ________ he had done something very clever.[ ]

A. as if

B. in case

C. while

D. though

填空题

（）是用来烹煮肉食、祭祀时陈列牺牲，宴飨时盛放肉食的炊具和食具，是青铜食器中最重要的器物。