汽轮机采用回热循环对于同样的末级叶片通流能力，由于前面的几级蒸汽流量（），而使得单机

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       Honesty comes in many forms. First there's self-honesty. Is what people see the real article or do

you appear through smoke and mirrors? I find that if I try to be something I'm not, I feel unsure of myself

and take out a part from my PBA (personal bank account). I love how singer Judy Garland put (表述) it, "Always be a first-class version (版本) of yourself, instead of a second-class version of somebody else."

       Then there's honesty in our actions. Are you honest at school, with your parents, and with your boss? If you've ever been dishonest, I think we all have, try being honest, and notice how whole it makes you

feel. Remember, you can't go wrong and feel right. This story by Jeff is a good example of that:

       In my second year of study, there were three kids in my math class who didn't do well. I was really good at it. I would charge them three dollars for each test that I helped them pass. I'd write on a little piece of paper all the right answers, and hand them off.

       At first I felt like I was making money, kind of a nice job. I wasn't thinking about how it could hurt all of us. After a while I realized I shouldn't do that anymore, because I wasn't really helping them. They weren't learning anything, and it would only get harder down the road. Cheating certainly wasn't helping me.

       It takes courage to be honest when people all around you are getting away with cheating on tests,

lying to their parents, and stealing at work. But, remember, every act of honesty is a deposit (储蓄) into

your PBA and will build strength.

1. The underlined part 'appear through smoke and mirrors' in the first paragraph means______.

A. to be honest              

B. to be unreal    

C. to become clear          

D. to come from an imagined world

2. Which of the following can best explain Judy Garland's words?

A. Be your true self rather than follow others.

B. Don't copy others or you can't be the first class.

C. Make efforts to be the first instead of the second.

D. Don't learn from others unless they're excellent.

3. What does the author expect to show by Jeff's story?

A. Honesty can be of great help.  

B. A bad thing can be turned into a good one.

C. Helping others cheat can do good to them.

D. One should realize the wrong in his bad actions.

4. In the last paragraph the author mainly wants to express _______.

A. one must be brave to be honest    

B. it's difficult to be honest when others are not

C. one should be honest when making a deposit

D. honesty in one's actions can help him in the future

过氧化钙晶体（CaO₂·8H₂O）呈白色，微溶于水，加热至350℃左右开

始分解放出氧气。过氧化钙可用于改善地表水质、处理含重金属粒子废水、应急供

氧等。实验室可用工业碳酸钙（含MgCO₃、FeCO₃等杂质）制取纯净的碳酸钙，然后再

用纯的碳酸钙制取过氧化钙，其主要流程如下：

回答下列问题：

整个流程中涉及的化学反应属于氧化还原反应的有     个，请写出其中任意一个的离子方程式：                                ；

（2）反应②生成CaO₂·8H₂O的化学反应方程式为                                   ；

反应时用冰水冷却的主要原因是                                        ；

（3）将过氧化钙晶体在坩埚中加热并逐渐升高温度。测得样品质量随温度的变化如图曲线所示，则350℃以后所得固体物质的化学式为                                  。

心源性水肿的主要表现，除外（）

A.静脉压升高

B.水肿特点是首先出现于身体下垂部分

C.水肿性质软而移动性大

D.有肝肿大及颈静脉怒张

E.严重时出现胸、腹水

金瓷结合中，不受金瓷热膨胀系数影响的因素是（）。

A.合金和瓷材料本身热膨胀系数匹配不合理

B.材料本身质量不稳定

C.瓷粉调和或堆瓷时污染

D.烤结温度、升温速率和烤结次数变化

E.金瓷结合面除气预氧化不正确

男，40岁，胸部被摩托车撞伤后半小时感气促，左胸闷胀，呼吸音减弱，胸片示左侧气胸，肺压缩约50%，下列哪项处理不妥（）

A.给氧

B.鼓励咳嗽排痰

C.抗生素预防感染

D.积气不多，可让其自行吸收

E.对症治疗的同时胸穿抽气