男性婴儿 * * 梗阻的重要原因()
A．结石
B．结核
C．肿瘤
D．狭窄
E．先天性后 * * 瓣膜
参考答案：E
The physician has ordered Oxtriphyllin (Choledyl SA) 0.2 g. Available tablets of the medicine are 100 mg. How many tablets should be given
A. 0.5 tablets.B. 2.0 tablets.C. 2.5 tablets.D. 5.0 tablets.
型芯是为了获得铸件的（）
A、外形
B、尺寸
C、内腔
D、表面
