正常成人潮气容积中无效腔气为(). A.100ml B.150ml C.200ml

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问题:

正常成人潮气容积中无效腔气为().

A.100ml

B.150ml

C.200ml

D.250ml

E.300ml

考点:普通外科学(医学高级)诊断学基础诊断学基础题库
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债券申请上市应当符合()。

A.经国务院授权的部门批准并公开发行

B.实际发行债券的面值总额不少于500万元

C.申请上市时仍符合法定的债券发行条件

D.证券交易所认可的其他条件

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We are what we eat. What we are  1.          (accustom)to eating every day has a great effect on our health. Consequently (As a result), we should make         2.           effort to change our bad eating habits. As we all know , baked or fried foods may be   3.            (taste), but eating too much of them will probably  4.             (短语)some illnesses. In addition, some food which costs us a great deal of money is not healthy,  5.            junk food.

6.           people like to eat is various from culture to culture. Compared with people in the West, Chinese people used to eat more grain, more vegetables and less meat,  7.             is a good eating habit.  8.            , things are quite different now. With the rapid economic   9.           (grow) of our country, we also eat a lot of food high in sugar and fat. If you take a casual look at people in the street, what impresses you will probably be the fact that there are a lot more fat people than ever before. We are at risk when  10.            (eat)out without          considering the balance of our food . To be healthy, we must keep it in our mind that the food we choose to eat should give us the nutrients(营养) we need.

题型:单项选择题

《外套》是()国作家()的作品。

题型:单项选择题

如图12所示质量为M的小物块A静止在离地面高h的水平桌面的边缘,质量为m的小物块B沿桌面向A运动并以速度v0与之发生正碰(碰撞时间极短)。碰后A离开桌面,其落点离出发点的水平距离为L。碰后B反向运动。已知B与桌面的动摩擦因数为μ,重力加速度为g,桌面足够长。求

(1)碰后A、B小物块分离的瞬间速率各是多少?

(2)碰后小物块B后退的最大距离是多少?

题型:单项选择题

对于交流接触器的线圈,当电源电压在额定值的40%~85%时()。

A、能可靠吸合

B、能可靠释放

C、不能保证动作

D、能可靠吸合和释放

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