检测中,将高浓度标本污染给低浓度标本,而造成的检测值误差,这是属于下列哪种误差()

题型:单项选择题

问题:

检测中,将高浓度标本污染给低浓度标本,而造成的检测值误差,这是属于下列哪种误差()

A.总误差

B.系统误差

C.随机误差

D.方法误差

E.操作误差

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题型:单项选择题

阅读理解。

     Basketball stars are usually tall. The stars of other sports are sometimes short. Some of the best football

players are not very tall.

     Short people often have better balance than tall people, so they do not fall over (摔倒) very often. In some

sports the players must have good balance, for example, table tennis and running.

     You do not need long legs to run fast! Some of the fastest runners in the world are not very tall. Some are

tall and some are short. There is no medicine to make people grow taller or to make people shorter.

     The tallest woman in the world is Sandy Allen. She is 2.317 meters tall and lives in the United States.

     The shortest person in the world is Gul Mohammed from India. He is only 57 centimeters (厘米) tall.

     Today young people in many countries grow taller than their parents. This is because they eat better food

today. Good food can help children grow.

1. How many different sports do we talk about in this passage (段落)? What are they?

   ____________________________________________________________.

2. Is there any medicine to make people grow taller or to make people shorter?

   ____________________________________________________________.

3. The tallest person in the world is ________ meters taller than the shortest one.

4. _______ _______ helps young people today grow taller than their parents.

5. 将短文中画线的句子译成汉语:

   ___________________________________________________________.

题型:单项选择题

按照自然生态学原理建立的生态工业体系,其发展模式是()。

A.资源—产品—废物—治理

B.资源—产品—废物—再生资源

C.资源—产品—再生资源—产品

D.资源—产品—再生资源—再生产品

题型:单项选择题

下列叙述正确的是(   )

A.同温同压下,4Al(s)+3O2(g)===2Al2O3(s)在常温和点燃条件下的ΔH不同

B.在某反应中,当反应物具有的总能量大于生成物具有的总能量时,该反应放热,△H>0

C.已知C(s)+1/2O2(g)="CO(g);" △H =-110.5kJ·mol-1,则碳的标准燃烧热是△H =-110.5kJ·mol-1

D.新能源应具有资源丰富、可再生、无污染或少污染等特点。如太阳能、氢能、风能、地热能、潮汐能和生物质能等新能源

题型:单项选择题

刚上市那会儿,售价过万元的iPhone4s16G版三天就降到了8500元。记者在中关村了解到,iPhone4s每天都会有几百元的降幅,销售人预计其价格将稳定在6000元左右。这6000元是()①商品价值的货币表现②货币在执行价值尺度的职能③一般等价物④现实的货币⑤观念中的货币

A.①③④

B.①③⑤

C.②③⑤

D.①②⑤

题型:单项选择题

ATC功能集成在哪个部件内?

A、INU

B、ICU

C、TCAS

D、以上答案均错误

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