调节回炼比是改变产品分布和保证热量平衡的一个重要手段，它是指（）之比。 A.总回炼量

阅读理解。

     To be a class president, you have to do a lot of things, and some students might not like you. Do you still want

the  job? If your answer is "yes",   then you should start to prepare for it.   You can make a team to help you make

posters and write a speech. Your speech should be interesting,   or no one will pay any attention to it. When you

finish these things, you can begin to run for it.

     First, put up your posters  to  tell others you want to be the president.   Find a good time to  give your speech.

Don't forget to list   your ideas -tell other students what you will do for them,   but don't promise something you

cannot do, because if you win but you don't keep your words, all the students will hate you. Make some campaign

T-shirts for you and your team, and let people know what you are doing. Be nice to everyone, because people will

vote for you if they like you.        

根据短文内容,，完成表格。

                                      How to Prepare for the Campaign

         What to do? What's the purpose (目的)?Make posters with the help of your team and put them up. Let others

know (1) ___.Write (2) ____, and list your ideas in it.   Let others know (3) ___.Wear (4) ____ with your team. Let

others know what you are doing.(5) _____.Make others like you.

王夫子说”静者静动，非不动。静既含动，动不舍静。”这一诗句体现了 [ ]

A、运动和物质是辨证统一的

B、运动和静止是辨证统一的

C、运动是永恒的、绝对的和有条件的

D、运动是静止的特殊状态

中医学认为，构成人体的中心是（）

A.五脏

B.六腑

C.奇恒之腑

D.形体官窍

E.经络

测量气缸的压缩压力，如加少许机油后，压力上升20PSI以上表示（）。

A.活塞环磨损

B.气缸床烧坏

C.气门座烧坏

D.导管磨损

目前压裂用封隔器种类较多，深井使用（）封隔器。

A.扩张式90℃以上胶筒

B.压缩式90℃以上胶筒

C.机械式90℃以上胶筒

D.以上都有