依据《安全生产违法行为行政处罚办法》的规定，对有根据认为不符合安全生产的国家标准或者

2008年广州已经凭借879400辆的轿车生产数量首次超过上海居全国首位．用科学记数法表示879 400，记为______．

编制记账凭证。由操作员李红根据下列经济业务编制凭证：（1）3月4日，提取库存现金10 000元备发工资。借：库存现金（1001）　　　　　　10 000　　贷：银行存款——工行存款（100201） 10 000（2）3月15日，发放工资10 000元。借：应付职工薪酬（2211）　　　　10 000　　贷：库存现金（1001）　　　　　　10 000

患者男性，16岁，以呼吸困难和乏力就诊。体征有颈静脉怒张，肝肿大，腹水，下肢浮肿。听诊无杂音。超声示双房明显扩大，心包增厚，回声增强，有钙化点，下腔静脉增宽，最可能的诊断

A.冠心病心衰 

B.缩窄性心包炎 

C.扩张型心肌病 

D.限制型心肌病 

E.肥厚型心肌病 

阅读理解。

                                                        Selling Shoes

    A large store was having its spring sale on shoes and boots (靴子). It was the first

day of the sale, and the shoe department was full of women who were eagerly trying to buy

them. There were all kinds of shoes and boots in a variety of (各种各样) colors, and the

prices had been reduced a lot, because the store wanted to get rid of (处理掉) as many as

possible in order to make room for their new stock (进货).

    The cashiers (收银员) were kept busy, and at one moment a woman came to one of them

with her money in her hand and said, "I don't need a bag, thank you. I'm wearing the shoes

I bought." She pointed to them on her feet.

    "Would you like a bag to put your old shoes in then?" the cashier asked politely as

she took the woman's money. "No, thank you," the woman answered quickly. "I've just sold

those to someone else."

1. What were on sale in the large store last week? [ ]

A. spring sale

B. shoes and boots

C. clothes

D. new stock

2. Why were they being sold cheaply? [ ]

A. because they were on sale.

B. because they were old.

C. because they were out of fashion.

D. because the store wanted to make room for new store.

3. What did a woman say to one of the cashiers? [ ]

A. She wanted to buy a pair of shoes.

B. She didn't need a bag for her shoes.

C. She wanted a bag for her shoes.

D. She wanted to try the shoes on her feet.

4. What did the cashier ask her? [ ]

A. Do you need a bag for your old shoes?

B. Where is your pair of shoes?

C. Have you paid for your shoes?

D. Do they fit your feet?

5. Why didn't the woman need a bag? [ ]

A. She threw them away.

B. She was wearing the shoes she bought.

C. She put them into her handbag.

D. She had sold them to somebody else.

径向泵出口油压波动的原因及消除措施有哪些？