如图所示,物体A重40N,物体B重20N,A与B、A与地的动摩擦因数相同,物体B

题型:计算题

问题:

如图所示,物体A重40N,物体B重20N,A与B、A与地的动摩擦因数相同,物体B用细绳系住,当水平力F= 32N时,才能将A匀速拉出,求接触面间的动摩擦因数。

考点:滑动摩擦力、动摩擦因数
题型:计算题

列一元一次方程解应用题的关键是找(    ),从而列出方程。

题型:计算题

血液,尿液,胆汁,胸腹水在人体体液中声衰减程度谁最低

A.血液 

B.尿液 

C.胆汁 

D.胸腹水 

E.声衰减一样

题型:计算题

尿浊脾虚气陷型的临床表现有()

A.尿浊反复发作

B.小便混浊如白浆

C.头晕耳鸣

D.面色不华,神疲气力

E.舌淡,脉虚数

题型:计算题

生产劳动过程中需要进行保护,就是要把人体同生产中的危险因素和有毒因素隔离开来,()、卫生和舒适的劳动环境,以保证安全生产。

题型:计算题

Sometimes we have specific problems with our mother; sometimes, life with her can just be hard work. If there are difficulties in your (1) , it’s best to deal with them, (2) remember that any (3) should be done (4) person or by letter. The telephone is not a good (5) because it is too easy (6) either side to (7) the conversation.

Explain to her (8) you find difficult in your relationship and then (9) some new arrangements that you think would establish a (10) balance between you. Sometimes we hold (11) from establishing such boundaries because we are afraid that doing (12) implies we are (13) her. We need to remember that being (14) from our mother does not (15) mean that we no longer love her. If the conflict is (16) and you cannot find a way to (17) it, you might decide to give up your relationship with your mother for a while. Some of my patients had (18) "trial separations". The (19) allowed things to simmer down, enabling (20) .

5()

A.innovation

B.manoeuvre

C.medium

D.synthesis

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