在井场，为防止止天然气水合物的生成，可以在（）设置加热炉使气体升温。 A.除尘后 B

阅读理解。

     Once there was a businessman. Every day he worked too much. So later he found he could not sleep

at night, but always slept in the day. He was worried and went to see a doctor. 

     "Can you help me?"he asked. "I slept very well before, but these days I can only sleep more than two

hours a night."

     The doctor looked over him carefully. At last he gave the businessman some medicine and told him to work less hard. Then he would soon be better.

     But the businessman grew worse and worse. He slept even less than before at night, and was always

falling asleep in his office. He visited to his doctor again, and it took the doctor a long time to find the

reason. The businessman's wife gave him the wrong medicine in the morning, and the one to keep him

awake at night.

1. What’s wrong with the businessman?

  ______________________________________________

2. What did the doctor do?

  ______________________________________________

3. After seeing the doctor, how was he?

  ______________________________________________

4. The businessman found the reason himself, didn't he?

  ______________________________________________

5. Why did the businessman grow worse and worse?

  ______________________________________________

患者女，30岁，1周前因外伤至冠折，已作完善根管治疗，检查：冠折断面在龈上、牙齿无松动，无叩痛，咬合关系正常，X线片示1｜恨充完善无根折

根管预备完成后，做以下哪种处理（）

A.FC球暂封

B.CP球暂封

C.OC球暂封

D.75％乙醇棉球暂封

E.无需处理

两圆相比，周长小的面积一定小．______．（判断对错）

如图所示，小车的质量40kg．人的质量为60kg，人用恒力 500N拉绳，若人和车保持相对静止．不计绳和滑轮质量、车与地面的摩擦，则车对人的摩擦力是（  ）

A．0

B．200N，方向向右

C．100N，方向向左

D．100N，方向向右

甲、乙银行签订借款合同，双方约定：借款金额为100万元，借款期限自2006年 5月起至2006年11月止。甲同时提供自己的一幢房屋作为抵押，双方另行于6月签订抵押合同，并于7月办理了抵押登记。同时，丙为甲的借款提供全额连带保证责任。8月，甲将房屋出卖给戊，但并未告知该房屋已经抵押的情况，该房屋出卖后也未办理登记过户手续。后甲到期没有清偿银行借款，乙银行诉至法院。经查，甲的配偶丁对甲借款、抵押以及出售房屋的事情都不知情。
问：
(1)如何认定甲、乙银行之间签订的借款合同的效力为什么
(2)甲、乙银行之间签订的抵押合同是否生效为什么
(3)乙银行能否取得对房屋的抵押权为什么
(4)如果乙银行欲实现抵押权或要求保证人丙承担连带保证责任，乙银行应该如何行使上述权利为什么
(5)如何确认甲将房屋转让给戊的效力为什么