患者女，45岁，因“月经紊乱2个月”来诊。行分段诊断性刮宫术，宫腔、颈管分别刮出少量

In January, 2011, ____ leader of the Chinese Communist Party Hu Jintao was warmly received by Barak Obama, who was elected ____ president of the US two years ago.

A．/; /

B．the; /

C．the; the

D．/; the

如图，质量为m的A物放在质量为M倾角为θ光滑的斜面B上，斜面B置于光滑的水平地面上，若水平向左推B物，且使A、B相对静止，则推力大小为______；若水平向右推A物，且使A、B相对静止，则推力大小为______．

二黄汤功效与作用

电刷与滑环装配时，应对电刷进行研磨，使其接触面大于（）。

A.80%

B.70%

C.68%

D.25%

县级地方人民政府饲料管理部门开展的饲料、饲料添加剂监督抽查可以收费吗？