柴油发动机相对汽油发动机而言,下列()有害物质的排放量远高于汽油发动机。A、CO B

题型:单项选择题

问题:

柴油发动机相对汽油发动机而言,下列()有害物质的排放量远高于汽油发动机。

A、CO

B、HC

C、NOX

D、微粒

考点:汽车发动机电控技术汽车发动机电控技术题库
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若1-m与3m+1是同一个数的平方根,则这个数可能是______.

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阅读下列短文,根据短文中的信息完成文后表格。(每空一词)
Smoking is bad for you, but what if your parents smoke? You might be worried about their health, be tired of smelling the smoke, or even a little embarrassed by it. You can’t order your parents to stop smoking, but you can encourage them to give up this bad habit. Tell them smoking is not good for their health.
If you think it will help, you could find some articles like this one and give them to your parents. Many states now have free programs to help people give up smoking. You might even see them advertised on billboards in your town. Point these out to your parents and encourage them to find out more about these programs.
What if your parents get angry with you for mentioning the topic of smoking? People don’t like to be told that they are doing something unhealthy, so it is possible your parents will be angry, especially if they are worried they won’t be able to give up smoking. Maybe they have tried before but failed.
Remember to be kind and show respect when you discuss smoking with your parents. Also remember that it is not easy to give up smoking. Some people have tried several times before they’re able to give up. Instead of shouting at them, tell them that you love them and want them to enjoy many healthy years ahead. They may eventually realize you are right about smoking.
If your parents agree to stop smoking, be their biggest supporter. Ask if there is anything you can do when they feel the desire to smoke. Maybe you could go for a walk, do a puzzle, or listen to music together. As they reach milestones, such as a month without smoking, Remember to celebrate the achievement.
Topic
★How to   小题1:your parents to give up smoking
 小题2:
★Smoking   小题3:their health.
★You are either worried about their health or   小题4:with smelling their smoke.
Ways
★It may also be   小题5:to find some articles for them about giving up smoking. Tell them there are many free programs available.
★They are sure to   小题6:your advice so long as you love and respect them. It is important to remember that it is   小题7:to give up smoking.
To   小题8:their giving up smoking, you can do many things.
★Spend   小题9:time with them. For example, go for
a walk, do a puzzle, or listen to music together.
★Don’t  小题10:to celebrate their achievement and encourage them.
 
题型:单项选择题

皮质醇增多症(库欣综合征)最常见的病因是()。

A.肾上腺皮质腺瘤

B.肾上腺皮质腺癌

C.垂体ACTH分泌过多

D.异位ACTH综合征

E.医源性皮质醇增多症

题型:单项选择题

(1)已知x=1,y=-1,求代数式2x2y-3xy2+4x2y-5xy2的值.

(2)已知a=-2,b=-1,c=3,求代数式5abc-2a2b+[3abc-(4ab2-a2b)]的值.

题型:单项选择题

速递服务中,客户满意度的决定性因素包括()

A.时限

B.价格

C.安全

D.服务

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