再碳刷上部低于刷握或与刷握一样平时应（）。

阅读下文并回答问题。

Dave is my friend. His family is rich. His parents always give him lots of pocket money. But Dave thinks his parents work very hard and it's not easy for them, so he always tries his best to save money. He has some good ways to do it.

Dave likes reading. He has lots of books. He tells me he often buys books online, because they're cheaper. And when he has free time, he often goes to bookstores or libraries to do some reading.

Dave has a bike. He usually goes to school by bike instead of taking a bus. Sometimes when it rains or snows, he walks. These two ways help Dave keep healthy and save some money.

Dave brings a bottle of water to school every day. When other students drink juice, he enjoys his water. He thinks water is the cheapest but the best drink.

Some students think Dave is mean. But I don't think so. I think he is right. What do you think of him?

小题1:Does Dave try his best to save money?

小题2:How does Dave usually go to school?

小题3:What does Dave bring to school every day?

生物医学模式向生物－心理－社会医学模式的转变，引起了医德的一系列变化。但应除外（）

A.医德根本宗旨的变化

B.医德意识的变化

C.医德理论的变化

D.促进了生命伦理学的诞生

E.医德规范的变化

银杏树与杏树相比，最主要的区别是 [ ]

A．果实没有酸甜的味道            

B．花没有鲜艳的颜色    

C．种子没有果皮的包被            

D．没有果实和种子

战略控制

假设订货管理数据库中有3个表，仓库.DBF、职工.DBF和订购单.DBF，它们的结构分别如下：
仓库表(仓库号C(4)，城市C(10)，面积I(4))
职工表(仓库号C(4)，职工号C(4)，工资Y)
订购单表(职工号C(4)，供应商号C(3)，订购单号C(6)，订购日期D，总金额Y)
检索工资多于1200元的职工号，请对下面的SQL语句填空。
SELECT职工号；
FROM (10) ；
WHERE工资＞1200
检索在仓库"E23”或"W32”工作，并且工资少于2000元的职工号，请对下面的SQL语句填空。
SELECT 职工号 FROM 职工；
WHERE 工资＜2000 (11)
检索工资大于2000元的职工所管理的仓库的平均面积，及其中的最大面积和最小面积。请对下面的SQL语句填空。
SELECT (12) ，MAX(面积)，MIN(面积)；
FROM 仓库 WHERE 仓库号 (13) ；
(SELECT (14) FROM 职工 WHERE 工资＞=2000)
检索每个仓库至少有3名职工的工资总额。请对下面的SQL语句填空。
SELECT 仓库号，COUNT(*)，SUM(工资)FROM 职工；
GROUP BY 仓库号；
(15) ＞=3