（）指现场采集的初始样品，（）指需要经过预处理，才能进行测定的样品。

阅读理解。

    Everybody in Britain talks about the weather, It's the most common subject of conversation, "Isn't a nice

day?" "Do you think it will rain?" "I think it's going to be windy." These are common ways of starting a

conversation.

    Many people think they can tell what the weather is going to be like. But they hardly ever agree with each

other. One man may say, "Do you see how cloudy it is in the east? It's going to rain tomorrow" Another man

will say, "Yes, it's cloudy in the east. But I think we are going to have fine weather tomorrow."

    People often look for the weather they want. When a farmer needs water, he looks for something to tell

him it's going to rain. He won't believe anything else. When some friends have a picnic, they're so sure the

weather is going to clear up very quickly that they sit down and eat their lunch while it rains.

    Almost everyone listens to what the weatherman says. But he doesn't always tell us what we want, and

once in a while he makes a mistake. Still, he usually comes closer to being correct than anyone else.

1. We usually ______ when we start a conversation with our friends in Britain. [ ]

A．say hello to them

B．ask them to sit down

C．pass them some drinks

D．talk about the weather

2. Why do many people hardly ever agree with each other when they talk about tle weather?[ ]

A．The weather changes very quickly.

B．They don't listen to weatherman.

C．Nobody can tell what the weather is going to be like.

D．Each of them looks for the weather he wants.

3. The writer thinks the weatherman ______. [ ]

A．always makes mistakes

B．makes fewer mistakes than anyone else

C．never makes a mistake

D．tells us the weather we hope for

患者男，35岁，患1型糖尿病，半昏迷状态急诊入院。体检：昏迷，呼吸深且呈叹息样，每分钟30次，带有酮臭味；肺上界有啰音。实验室检查：血浆葡萄糖30.4mmol/L、钾5.8mmol/L，钠122mmol/L、尿素24.0mmol/L、肌酐230μmol/L，尿糖（++++）、尿酮体（++），Hb147g/L、WBC15.7×10⁹/L。

根据以上临床表现，应初步诊断为（）。

A.肺部感染伴呼吸衰竭

B.脑出血致昏迷

C.糖尿病酮症酸中毒昏迷

D.糖尿病性高渗性非酮症昏迷

E.糖尿病乳酸酸中毒昏迷

F.急性肾功能不全伴代酸

教育影响

某机场通道两侧需要安装护栏，以保证旅客安全。工程技术人员查阅了有关资料，按照最大百分位数的人体重心高度确定了护栏的高度，从工效学的角度讲，这种设计属于

A．最大值设计

B．最小值设计

C．安全度设计

D．单限值设计

E．中位数设计

类Panel默认的布局管理器是

A．GridLayout

B．BorderLayout

C．FlowLayout

D．CardLayout