What is the normal pH range for arterial b

阅读理解。

     Charles Brown is a doctor, but he is not a doctor who helps sick people. He helps fish. 　　

     People who live in Charles' town call him "The Fish Doctor". If their pet (宠物) fish get sick, they call

him on the telephone.Charles drives his truck(卡车)to the people's houses. In the truck, he had medicine (药)

to help the sick fish get better. 　　

    Sometimes a pet store calls Charles when there are sick fish. Wherever he goes, "The Fish Doctor" is always welcome.

1.The best title (题目) is ______.

A. The best Doctor

B. Charles Goes Fishing 　　

C. A New pet Store

D. A Wonderful Meal

2. Charles goes to people's houses in a ______. 　　

A. car

B. bus

C. truck

D. train

3. People telephone Charles when their_____ are ill. 　　

A. dogs

B. fish

C. cats

D. children

4. You can tell from the story that some people _____. 　　

A. don't like Charles

B. paint their fish 　　

C. love their pet fish

D. eat their pet fish

5. People who live in Charles' town call him ______. 　　

A."The Fish Doctor"

B."The Dog Doctor" 　　

C."The Cat Doctor"

D."The Pig Doctor"

实验桌上有如下实验器材：同种材料制成的长度相同、不同横截面积（粗细均匀）的导体若干，符合实验要求的电源一个、滑动变阻器一个、电流表和电压表各一只、开关一个、导线若干．科技小组的同学们猜想：在电压一定时，通过这些导体的电流可能与它们的横截面积成正比．为了验证以上猜想，请你从实验桌上选择适当器材，画出实验电路图，并写出实验步骤．

（1）实验电路图：

（2）实验步骤：

①按电路图，将横截面积为S₁的导体接入电路．

为各项工作提供通讯联络是公安秘书工作。 ( )

项目融资的特点是什么？

你是项目经理，你的项目已到收尾阶段，你给客户提交了一份正式验收和需要签字的文件，客户拒绝签字，声称产品没有满足他们的期望，你知道这种情况可以通过下列行为来避免，但不包括（）

A.记录归档客户需求

B.记录客户拒绝签字

C.在过程中进行质量审计

D.要求对重大里程碑进行验收