细粉是指全部通过( )
A.5号筛B.6号筛C.7号筛D.8号筛E.9号筛
参考答案:A
解析: 中国药典范例中规定。
—I feel stressed in my study from time to time. I don’t know what to do.
—_________
A.You should keep quiet.
B.What about keeping your worries to yourself?
C.Why not ask the youth workers for advice?
D.You’d better pay no attention to your study.
绿化管理的基本要求包括:及时对妨碍业主、物业使用人活动的绿化植株进行(),减少人为践踏对绿化造成的危害。
A.维护
B.维修
C.改造
D.安排