滚轮踏面与两侧轨面的最大间隙应小于()
参考答案:10mm
Neither of them thought highly of him and they both tried to _____ him in his work.
A.hamper
B.support
C.depress
D.prevent
应选用的药物是
A.地高辛
B.硝酸甘油
C.心得安(普奈洛尔)
D.卡托普利
E.双氢克尿噻