解下列方程． x-8.5=237.35x=11.768.4x-6x=6．

The missing flight MH 370 attracted the most attention all over the world. The final result was that there were no survivors. Since 1985, Australian professor Ed Galea has interviewed over 2,000 survivors of 105 plane crashes, searching for the keys to keep alive

1. Sitting with your family

If you are traveling in a family group, you should be together with your family. Why? If you sit away from each other, it's only natural that you must want to join your family group when the accident happens. If you do that it’s going to cause more problems.

2. The seat belt

How do you undo your seat belt in your car? You press a button. In a plane, you lift a latch(插销). If you can't undo your seat belt then, you -can't escape and you will lose chances of survival.

3. Facing backward

We would all be safer if airline seats faced backward. But the difficulty with this is that the passengers don't like traveling with their back facing the direction of travel. Experts suggest that the direction of seats should be changed.

4. Put on a smoke hood（头罩）

"Smoke contains toxic (有毒的) gases, narcotic(麻醉的) gases. It contains irritant (刺激的)  gases. If you breathe enough of them you will die," explains Galea. He carries a smoke hood but warns that you must follow his example and learn how to use it. Otherwise you'll waste time trying to put it on time that could be used for making an exit.

5. Listen to the flight attendants

Listen to the flight attendants carefully and read the safety card after you get on the plane. Be prepared. And if you're about to crash, do 1ike this -- head down, ankles behind knees. The brace position is one of the most important things that a passenger should take on board when they fly. It’s designed to reduce your chances of being knocked during a heavy crash.

小题1:According to the first paragraph of the passage, what is the correct meaning of “survivors" in Chinese?_

A．黑匣子

B．遇难者

C．幸存者

D．恐怖分子小题2:Is it necessary for us to sit together with our family on the plane?

小题3:you follow the example and learn how to use a smoke hood, you'll      your time making an exit.

小题4:把短文中划线的句子译成汉语。

小题5:What is the main idea of the passage?

某兴趣小组的同学在实验室用含有少量氯化钙的氯化钠固体配制一定质量分数的氯化钠溶液，实验步骤如下图所示：

请回答：

（1）在“操作2”中，要用到的玻璃仪器除玻璃棒、烧杯外，还有　        　。

（2）加入“适量稀HCl”的目的是　                                             　。

（3）生成沉淀C的化学方程式　                                                     　。

（4）“操作3”的名称是　                                               　。

（5）用提纯的NaCl配制50g质量分数为 6%的氯化钠溶液，需要NaCl的质量为　 　g。

（6）如配制50g质量分数为3%的氯化钠溶液所需质量分数为6%的氯化钠溶液（密度为1.04g/cm³）和水的质量分别为：6%的氯化钠溶液体积　   　mL；水　    　g。

（7）在用量筒量取所需水的过程中，若俯视读数，而其余操作均正确，这样配得的溶液的溶质质量分数会　          　（填“偏高”、“偏低”、或“无影响”）。

下列腧穴，不属于手阳明大肠经的是：

A．迎香
B．天灾
C．曲池
D．阳溪
E．合谷

按照刑法的规定，下列犯罪人中，不可能被减刑的对象是（）

A．被判处管制的犯罪分子

B．被单处罚金的犯罪分子

C．作为累犯被判处有期徒刑的犯罪分子

D．被宣告缓刑的犯罪分子

先把需要连接的法兰，按公称直径和公称压力以“副”为单位统计出来，再查校对应的法兰______，就能查出螺栓的______，然后将各种螺栓______依次排列编制。