具有亲水性的钙通道阻断药是:
A.普尼拉明B.氟桂嗪C.尼莫地平D.地尔硫卓E.硝苯地平
参考答案:E
It is thoughtful ________ him ________ his CDs for us. [ ]
A. of, to play
B. to, playing
C. for, to play
D. for, playing
加工套类零件要保证它的精度要求是:(),麻花钻钻孔不能保证其精度要求。
A.同轴度,垂直度
B.同轴度,圆柱度
C.垂直度,圆柱度
D.平行度,圆柱度