离心泵的工作原理是什么？

下列各句中加粗词语使用不当的一项是[ ]

A．在刚刚结束的法国网球公开赛中，中国金花李娜的表现相当给力，以二比零直落两盘，击败夺冠大热门斯齐亚尼获得冠军。

B．城市建设不是面子工程，不应作秀，而应当将改善人民群众的生活条件，提高广大市民的综合素质作为中心工作来抓。

C．当夜幕降临的时候，整个城市都是繁弦急管，都是红灯绿酒。

D．“我读经典”系列读书活动深受我市青少年欢迎，同学们趋之若骛，从中吸取文化精髓。

根据税收征收管理法律制度的规定，税务机关在进行税务检查时，可以采取的行为有（）。

A.检查纳税人的账簿、记账凭证、报表和有关资料

B.到纳税人的生活场所进行检查

C.到车站、码头、机场、邮政企业及其分支机构检查纳税人托运、邮寄应纳税商品、货物或者其他财产的有关单据、凭证和有关资料

D.询问纳税人、扣缴义务人与纳税或者代扣代缴、代收代缴税款有关的问题和情况

下列关于基坑开挖监控的叙述，按照《建筑基坑支护技术规程》(JCJ120-99)，不正确的是( )。

A．位移观测基准点数量应不少于两个，且应设在影响范围以外

B．监测项目在基坑开挖前应至少测得两个初始值

C．基坑监测项目的监控报警值应根据监测对象的有关规范及支护结构的设计要求确定

D．监测点的布置应满足监控要求，但基坑边缘以外的物体不许进行监控

Once a man and his wife worked for an old man. There was a big box in the old man’s living room. The old man pointed to the box and said, "There’s only one thing you (1) do. Don’t open the box. " (2) saying this, he left his home.The woman said to her husband," There must be (3) expensive in the box. Let’s open it, shall we" Her husband said (4) to her. But the woman didn’t give up her (5) . One day, she decided to find out (6) was in it. Her husband didn’t stop her. She opened the box and looked inside. To her surprise, she found nothing in the box. She tried hard to close it, but she (7) That evening the old man came home and found the box was (8) . He was very (9) and asked the woman and her husband to leave his home."But there was nothing in the box," the woman said. "We haven’t taken anything at all. "The old man (10) them, "The box is not important, but I cannot believe you. That’s important!

第（9）空应选择（）

A．honest

B．happy

C．careful

D．angry

分离培养霍乱弧菌的常用培养基是（）

A.SS琼脂平板

B.碱性培养基

C.血琼脂平板

D.亚碲酸钾血琼脂平板

E.巧克力（色）平板