厄贝沙坦的化学结构是().
A.A
B.B
C.C
D.D
E.E
参考答案:E
The tea my mother made produced a _______ taste.Every one liked it. [ ]
A.pleased
B.pleasure
C.pleasant
D.terrible
光学分度头蜗杆借助于偏心机构与蜗轮脱开,即可通过滚花螺圈快速旋转()。
A.蜗轮副
B.传动手轮
C.微动手轮
D.主轴