关于导出单位的构成，由导出单位和导出单位组成的是（）。A.速度 B.力 C.功、热

社会的不公平、制度安排的不正义是犯罪的根源之一。

如图所示，一根木棒AB在O点被悬挂起来，AO＝OC，在A、C两点分别挂有两个和三个钩码，木棒处于平衡状态。如在木棒的A、C点各增加一个同样的钩码，则木棒

A．绕O点顺时针方向转动

B．绕O点逆时针方向转动

C．平衡可能被破坏，转动方向不定

D．仍能保持平衡状态

Your body, which has close relations with the food you eat, is the most important thing you own, so it needs proper treatment and proper nourishment(食物). The old saying “an apple a day keeps the doctor away.” is not as silly as some people think. The body needs fruit and vegetables because they contain vitamins. Many people take extra vitamins in pill form(丸剂), believing that these will make them healthy. But a good diet is made up of nutritive food and this gives all the vitamins you need. The body doesn't need or use extra vitamins, so why they waste money on them?

In the modern Western world, many people are too busy to bother about eating properly. They throw anything into their stomachs, eating hurriedly and carelessly. The list of illnesses caused or made worse by bad eating habits is frightening.

小题1:The old saying referred to in the passage tells us that        .

A．eating apples regularly does lots of good to our health.

B．the apple is the best among all kinds of fruits

C．apples can take the place of doctors

D．an apple is a sure cure for illness小题2: In the second paragraph, the writer tries to let us know        .

A．our bodies need food, or we can’t live

B．often eating apples is a good habit

C．taking extra vitamin pills is completely useless

D．a good diet is of great importance for our health小题3:In the modern western countries        .

A．people won't want to pay more attention to their eating

B．people throw everything into their stomachs without chewing.

C．list of people’s illness are caused or made worse by bad eating habits

D．people are only too busy to cook meals for themselves小题4: From the passage we can draw a conclusion that if we want to keep healthy, we should        .

A．only eat an apple a day

B．take as many vitamin pills as possible

C．eat properly

D．throw something into our stomachs slowly and carefully.

慢性化脓性骨髓炎手术目的是（）

A.死骨分离且包壳充分形成者行死骨摘除

B.窦道周围皮肤恶变需截肢

C.窦道引流不畅时宜扩大引流

D.病理骨折考虑病灶清除，并行手术复位内固定

E.以上均不正确

怠速时，化油器哪项零件不工作：（）。

A.主喷油嘴

B.阻风门

C.浮子室针阀

D.量孔