库存成本主要由如下三个因素组成：保管费用、短缺成本和（）A、仓库管理费 B、库存损耗费

已知：WABT＝480℃，脱水塔底油中水为Y_F＝5ppm，汽油分子比为G＝6，重整进料油的平均分子量M＝108，循环气中水为Y_R＝25ppm，进料中水与气中水含量关系为3.2，求：注氯、注水量为多少？

___小题1:Stephen: Last summer I went through a training program and became a literacy volunteer. When I began to discover what other people's lives were like because they could not read, I realized the true importance of reading.

___小题2:Susan: I'm a girl from England and has studied French for years. I'm here in Fudan University studying Chinese. I like China as it is full of mysteries. So I hope the voluntary work will help me to get in touch with Chinese people and get to know about China．Although my study is busy, I can be free at night and at the weekends.

__小题3:Tim: Since I myself have overcome a lot of difficulties in my life, I understand young people's problems and I know how to listen patiently to others and offer some advice. I'm working now in the daytime so I can only spend two to three hours a day at night to help others.

小题4:Lisa: I burst into tears when I saw those children in a TV programme. What a sight. They are only bone and skin left. What's worse, every day the children are dying because of lack of food．I realized how lucky I am with enough food and a good chance to get education. The summer vacation is coming and I hope I can do something for them.

A．As we know, the 2010 World Expo are held in Shanghai and many people from other countries come to visit China．The taxi drivers in Dongfeng Taxi Company think the way to show kindness is to be able to greet the foreigners in their languages. They need someone who can teach them languages and the best time is at night when they are not so busy.

B．Tom is so addicted to on-line games that he cannot concentrate on his study like before. Now he often misses school in order to play games, thus telling lies to his teachers and parents again and again. Though he realizes what he does is wrong, he just can't stop it. How badly he needs someone's help.

C．Mane, a 44-year-old single mother of three, has to walk two miles to the nearest supermarket twice a week because she doesn't know which bus to take. What's worse, since she does not know words, she can not write out a shopping list. Also, she can only recognize items by sight, so if the product has a different label, she will not recognize it as the product she wants.

D．"Helping hand" organization will hold an event to help the starving children in Africa．The event starts in August and those taking part in will go without food for 30 hours. In this way, it is expected that money will be raised for the poor children.

巧填“春”字打头诗。

1．（　　）到死丝方尽，蜡炬成灰泪始干。

2．（　　）又绿江南岸，明月何时照我还。

3．（　　）不觉晓，处处闻啼鸟。

4．（　　）一粒粟，秋收万颗子。

如图（a）为“研究平抛运动”的实验装置，斜槽末端B处已经水平，如图（b）是在斜槽末端B处对接了平板P．利用这套装置可以测量小物块Q与平板P之间的动摩擦因数，实验步骤如下：

①测量出斜槽末端高度h和平板P的长度L；

②将物块Q在A点由静止释放，测量出Q落地点距B点的水平距离S₁；

③水平对接平板P，如图（b）所示（P板的上表面与斜槽末端相切）；

④再次将物块Q在A点由静止释放，测量出Q落地点距P板右端的水平距离S₂；

试求出：（用实验中的测量量表示，重力加速度为g）：

（1）物块Q到达B点时的速度v_B=______；

（2）物块Q与平板P之间的动摩擦因数μ=______；

（3）已知实验测得的μ值略大于实际值，其原因除了实验中测量的误差之外，其它的可能是______．（写出一个可能的原因即可）．

以下实验能获得成功的是 [ ]

A．用酸性KMnO₄溶液鉴别乙烯和乙炔

B．将铁屑、溴水、苯混合制溴苯

C．在苯酚溶液中滴入少量稀溴水出现白色沉淀

D．将铜丝的酒精灯上加热后，立即伸入无水乙醇中，铜丝恢复成原来的红色