下列哪项不属于机械性眼外伤（）
A.辐射伤
B.锐器伤
C.穿孔伤
D.异物伤
E.钝器伤
参考答案：A
—What's the result of the basketball match?
—Our team _______ the game by a score of 72 to 68.[ ]
A. will win
B. won
C. wins
D. had won
选用高的管电压可以提高底片对比度，从而提高射线检验灵敏度
