空调水系统中的重力水管道宜选（）。 A．混凝土管 B．镀锌钢管 C．铸铁管 D．锅炉

阅读小天地。

      Hello! I have a friend. She is tall and thin. She has big eyes and a small red mouth. She has long black hair.

She is very beautiful (漂亮的). She is a good student. She likes music, science and sports. She has beef,

chicken, soup and rice for lunch (午餐) and dinner (晚餐). Who's she? Guess! That's right! She is Susan.

根据短文内容，判断下列句子的正(√)误(×)。

( ) 1. My friend is Susan.

( ) 2. She is short and thin.

( ) 3. She likes painting and sports.

( ) 4. She has beef, chicken, milk and rice for lunch.

( ) 5. Susan has small eyes and a big mouth.

元朝时形成了“回回遍天下”的局面。据考证，湖南桃源著名历史学家翦伯赞的先人就是元明时期迁徙到内地的畏兀儿（维吾尔）族。这反映了元朝时期

A．经济重心南移

B．行省制度的实行

C．湖南影响力增强

D．民族融合不断加强

柜面收到假币应在假币上加盖“假币”戳记，装入“假币收缴专用封装袋”后也应加盖“假币”戳记，没收假币后，要向假币持有人出具《假币收缴凭证》，其上加盖（）。

A、假币章

B、核算用章

C、核算事项证明章

D、业务公章

Rohrer指数适用于学龄前儿童的体格营养状况评价。

滑腱症