何为有势流？有势流与有旋流有何区别？

甲公司与乙公司订立货物买卖合同，约定出卖人甲公司将货物送至丙公司，经丙公司验收合格后，乙公司应付清货款。甲公司在送货前发现丙公司已濒于破产，遂未按时送货。根据合同法律制度的规定，下列各项中，正确的是()

A.甲公司应向乙公司承担违约责任

B.甲公司应向丙公司承担违约责任

C.甲公司应向乙公司、丙公司分别承担违约责任

D.甲公司不承担违约责任

用括号内所给单词的适当形式填空。

1.  We are against _____ (chop)  wood for a meal in the forest.

2.  Many people in that village have got a cancer because they drank the _____ (pollute) water.

3.  I am _____ (disgust) at the people that have bad manners.

4.  My elder brother decided to go abroad to continue his _____ (educate).

5.  The skirt is very _____ (suit) for you.  You look very pretty m it.

6.  Cheetahs are killed because of their beautiful _____ (spot) fur.

7.  —What do you call that _____ (fur) animal?

     —A chimpanzee.

8.  Children like monkeys because they are _____ (play).

9.  The panda is one of the _____ (endanger) animals in the world.

10.  We all know that Australia is the home of _____ (kangaroo).

下列区别可饮用的蒸馏水与食盐水的方法中不正确的是

A．加入肥皂水

B．蒸发至干

C．测定导电性

D．尝味道

总账管理中，期末调汇所使用的汇率是（）。

A.固定汇率

B.浮动汇率

C.调整汇率

D.记账汇率

能体现医生特殊干涉权的是

A．医生对自杀的病人予以制止
B．医生的行为以保护病人利益、促进病人健康、增进其幸福为目的
C．医生要保护病人的隐私
D．医生的行为要遵循医德规范的要求
E．医生在紧急灾难(如传染病流行)面前要服从卫生部门调遣