已知函数f(x)=ax+b,其中f(0)=-2,f(2)=0,则f(3)=( )

题型:选择题

问题:

已知函数f(x)=ax+b,其中f(0)=-2,f(2)=0,则f(3)=(  )
A.2
2
-2
B.
3
9
-3
C.3
3
-3
D.3
3
-3
-3
3
-3
考点:指数函数的解析式及定义(定义域、值域)
题型:选择题

下列哪项不是患者大量输血后伤口渗血不止的原因()。

A.输注血液保存时间过久

B.过量使用血浆代用品

C.凝血因子被稀释

D.患者血小板数量减少

E.容易诱发DIC产生消耗性凝血障碍

题型:选择题

Your teen is falling asleep in class

Teens have a busy morning schedule as they need to wake up and get moving very early in order to catch a bus and get to school by the required time. This means teens need to get their rest the night before or they will be too tired to learn anything at school.   小题1:  

When a teen falls asleep in class, two things happen: he/she misses what is being taught and he/she loses the respect of the teacher. He/She may also receive a consequence from the school, depending on the classroom discipline policy.   小题2: 

To prevent your teen from being sleepy in class, try these three tips:

* Set a time for “lights out” on school nights. This is never be any later than 10 p. m. and preferably 9 p.m.   小题3:  Soft music can be on and used to help calm your teen.                          

* Help your teen develop a nighttime routine that involves activities that slow them down for the end of the day.   小题4:  Turning off the computer and disconnecting from friends and the excitement of the day an hour before bedtime will also help your teen relax.

* 小题5:  This will reinforce(增强)what it feels like to be rested and capable of accomplishing what he/she wants.

A.What’s worse, they may even fall asleep in class.

B.Taking a bath and reading are two activities that work well.

C.Set a good example and show him/her your love for learning.

D.Point out the positives after your teen has had a good night’s rest.E. “Lights out” means the computer, television, lights and cell phone should be off.

F. All of these things affect your teen’s academic success and can be avoided.

G. While your teen keeps his/her goals in line with your expectations, he/she may have his/her own goals.

题型:选择题

按照()不同,可分为公司类贷款和个人类贷款。

A、贷款主体

B、贷款对象

C、贷款方式

D、贷款内容

题型:选择题

1.8的计数单位是______,它有______个这样的计数单位.

题型:选择题

根撤地表水环境质量标准》(GB 3838—2002)的Ⅲ类标准,COD的标准限值是( )mg/L。

A.10

B.20

C.30

D.40

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