物体M位于倾角为α的斜面上,受到平行于斜面的水平力F的作用处于静止状态,如图所示

题型:不定项选择

问题:

物体M位于倾角为α的斜面上,受到平行于斜面的水平力F的作用处于静止状态,如图所示,如果将外力F撤去,则物体

[ ]

A.会沿斜面下滑

B.摩擦力方向一定变化

C.摩擦力变大

D.摩擦力变小

考点:共点力的平衡
题型:不定项选择

小题1:He is _____ (装备) with a deep sense of justice and responsibility.

小题2:Fake milk powder has caused the ______ (死亡) of many babies.

小题3:As they had no children of their own, the Smiths _____(收养) me.

小题4:Many ______ (百) of people are in want of basic needs.

小题5:It's no use_______(抱怨) of his carelessness.

小题6:What are the _______ (特点) of successful language learners?

小题7:_______(就个人而言), I don't care.It's not my business.

小题8:The course will be given ev6ry _______ (星期四) afternoon.

小题9:We are _______ (熟悉)with sports like football and basketball.

小题10:The enemy was caught _______ (活着的) and put into prison.

题型:不定项选择

对“下”的词性的分析,正确的一组是[ ]

老虎正要下山,老猎人躲在石岩下,抡起虎叉,突然给了老虎一下。

A. ①动词 ②方位词 ③量词

B. ①介词 ②方位词 ③量词

C. ①动词 ②助词 ③量词

D. ①介词 ②助词 ③量词

题型:不定项选择
比的前项扩大2倍,后项缩小4倍,比值(  )
A.扩大8倍B.扩大2倍C.缩小4倍D.缩小8倍
题型:不定项选择

一肺气肿患者,晨起咳嗽后突感左上胸撕裂样痛,片刻后疼痛缓解,出现大汗、胸闷、不能平卧。心率130次/min,听诊左侧呼吸音减低。最可能的诊断是()

A.心绞痛

B.急性肺栓塞

C.干性胸膜炎

D.阻塞性肺不张

E.自发性气胸

题型:不定项选择

参与乳糜微粒的合成与分解、运输外源性TG的载脂蛋白是()

A.ApoAⅠ

B.ApoB48

C.ApoCⅡ

D.ApoD

E.Apo(a)

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