物理学中伏特是（）计量单位。 A.电压 B.电流 C.功率 D.压力

岳飞在《满江红》中有“壮志饥餐胡虏肉，笑谈渴饮匈奴血”。这里的“胡虏”“匈奴”指（）。

A.契丹族

B.女真族

C.党项族

D.蒙古族

圆盘耙的距离与（）（）（）有关。工作时为使沟底平坦且不致发生拥土现象，常将耙片配置成（）。

The word "sport" first meant something that people did in their spare time. Later in often meant hunting wild animals and birds. About a hundred years ago the word was used for organized games. This is the usual meaning of the word today. People spent a lot of their spare time playing football, basketball, tennis and many other sports. Such people play because they want to. A few people are paid for the sport they play. These people are called professional sportsmen. They may be such sportsmen for only a few years, but during that time the best ones can make a lot of money.

For example, a football player in England earns more than 50,000 pounds in a year. Of course, only a few sportsmen can earn as much money as that.

It is possible for middle class people to engage in sports like golf, tennis and motor-racing. Perhaps the most surprising thing about sportsmen and money is this: the stars can earn more money from advertising than from sport.

An advertisement for sports equipment does not simply say "Buy our things." It says, "Buy the same shirt and shoes as...". Famous sportsmen can even advertise things like watches and food. They allow the companies to use their names or a photo of them and they are paid for this. Sport is no longer just something for people’s spare time.

Most people spend a lot of their spare time playing a sport because they ().

A．would like to

B．have to do so

C．want to earn some money

D．will be stars

离心泵的双转数代表结构相同而叶轮尺寸不同的泵的共同特点。

个体户甲某因做生意需资金而与乙农村信用社签订借款合同，双方约定，借款50000元，月利率为5‟，借款期限为2002年3月19日至2003年3月18日，丙某以其所有的一套三室一厅的住房作抵押担保。同日丙某与乙信用社签订了一份《房屋限期抵押合同》，且双方到房监所办理了抵押登记。该抵押合同约定：抵押期限自本抵押合同登记之日起至2003年4月18日止，若甲某不履行还款义务，信用社须在抵押期限内向法院起诉，否则，抵押期限届满后抵押人丙某将不承担担保责任。借款合同订立后乙信用社如期向甲某发放借款，但到期后甲某仅给付了部分借款利息后，便杳无踪影。2003年9月10日，乙信用社诉至法院要求判令甲某还款，并要求丙某承担抵押担保责任。

什么是抵押期间？抵押权与抵押期间的关系如何？