男性患者，23岁，体重57kg，2周来反复呕吐、腹泻，曾在当地医院输液治疗(液体不详

现有一种特殊的电池，它的电动势E恒定，内阻r较大．为了测定这个电池的电动势和内电阻，某同学利用如图甲所示的电路进行实验，图中电压表的内阻很大，对电路的影响可不考虑，R为电阻箱，改变电阻箱的阻值，记录电压表示数，得到如图乙所示图线．

（1）图线中斜率的物理意义是______，截距的物理意义是______．由斜率与截距可以求得E=______V，r=______Ω．

（2）若实验中电压表内阻的影响不能忽略，则由上述图线求得的电动势将比真实值______（填“偏大”、“不变”或“偏小”）求得的内阻将比真实值______（填“偏大”、“不变”或“偏小”），并简要说明理由（写出必要的计算式）：______．

     I'd like to say something about the canteen service in our school.In general,the service is________(满意)．The 1.________hall is clean and tidy.The dishes look inviting and tasted________ as well.What's

more,the workers 2.________there treat us as their friends,________makes us 3.________feel  very

happy.However,the________(价格) of 4.________the meals is a little too high.Besides,we can only have

a few dishes to c________from and the canteen is5.________ ________(拥挤)．As a result, we often

have to 6.________stand in line for a long time________we can get  7.________the  meal. You could

understand what difficulty we________in dealing with the three meals  every 8.________day .May  I

suggest  something________done  to  9.________  s________ the problems so that we can all enjoy

10.________our meals at school?

可较好地反映人体铬的状况的指标是（）

A.血铬

B.尿铬

C.发铬

D.A+C

E.A+B+C

人们从饮水中现已能检出有机物达（）。

A.1000多种

B.900多种

C.800多种

D.700多种

E.600多种

下列药物一般不适宜制成胶囊剂的是

A．药物是粉末或颗粒
B．药物油溶液
C．具有臭味的药物
D．风化性药物
E．药物的油混悬液