各种涂料的成膜机理是一样的。( )

题型:判断题

问题:

各种涂料的成膜机理是一样的。( )

考点:涂装工技师涂装工技师
题型:判断题

下列溶液中各微粒的浓度关系正确的是 [ ]

A.0.1 mol·L-1 CH3COOH溶液中:c(CH3COO-)=c(H+)

B.将0.1 molCuSO4·(NH4)2SO4·6H2O溶于水配成的1L溶液中:

c(SO42-)>c(NH4+)>c(Cu2+)>c(H+)>c(OH-)

C.0.1 mol·L-1 NaHCO3溶液中:c(Na+)+c(H+)=c(HCO3-)+c(CO32-)+c(OH-)

D.等体积、等浓度的NaX和弱酸HX混合后的溶液中:c(Na+)>c(HX)>c(X-)>c(H+)>c(OH-)

题型:判断题

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

小题1: Many students feel stressed around big moments in their lives like during final exams or when applying to college. Stress can be a pretty dangerous thing, because it can cause you to become sick.. Here are some ways to cope with stress:

Laugh   Laughter is really one of the best medicines. When things get stressful, do things that make you laugh. Watch a funny movie. 小题2:  Chat with friends and family.

Take a Deep Breath  Breathing is a great way to reduce your stress. Taking deep breaths or doing breathing exercises may seem silly, but it do help you relax and clear up your mind.

Plan Ahead  Most students tend to study hard when test time comes close or do their homework right before it is due. However, having a plan will do a lot to decrease your stress.  小题3:   

Sleep  Sleep is another great tool in reducing stress. 小题4: You should be getting at least 6 to 8 hours of sleep each night. As you know, a lack of sleep can be bad for your health.

Learn to Say “No”   小题5: So there are times when it is okay to say “no” to the requests of friends, families and teachers. If it is going to add too much to your stress level, just say so.

A.There are a lot of ways to deal with stress.

B.Sometimes life gets pretty stressful.

C.Read an interesting book.

D.Some stress comes from doing everything you’re asked to do.E. It is essential that we allow our bodies to recover from daily stress.

F. Give yourself the appropriate amount of time to complete tasks, and break those tasks down into manageable portions.

G. You can lose yourself for a while in the music.

题型:判断题
下列分式与分式
-a
m-n
相等的是(  )
A.
a
m-n
B.
a
-m+n
C.
a
m+n
D.-
a
m+n
题型:判断题

下列是吴茱萸的适应症的是

A.中寒腹痛,寒疝脚气

B.厥阴头痛,呕吐涎沫

C.脾肾阳虚,五更泻泄

D.呕吐吞酸,或寒或热

E.前述四项均正确

题型:判断题

冬季东亚大槽形成的主要原因是()。

A.太阳辐射

B.海陆差异

C.长波调整

D.高原地形影响

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