如图,有一个质量为m的物体,静止在倾角为θ的斜面上,物体与斜面间的动摩擦因数(即

题型:不定项选择

问题:

如图,有一个质量为m的物体,静止在倾角为θ的斜面上,物体与斜面间的动摩擦因数(即滑动摩擦系数)为μ,现使斜面在水平面上向右做匀速直线运动,移动距离L,则摩擦力对物体所做的功为

[ ]

A、0

B、gμmgLcosθ

C、mgLsinθcosθ

D、-μmgLsinθ

考点:
题型:不定项选择

行政监督,是指各类监督主体依法对国家行政机关及其公务员的行政行为所实施的监察、督查、督导活动,如稽查特派员监督。 ( )

题型:不定项选择

除下列哪项外,骨髓检查可表现有巨核细胞减少()

A.原发性血小板减少性紫癜

B.再生障碍性贫血

C.急性白血病

D.放射病

E.浆细胞性白血病

题型:不定项选择

Rosa and Dimitri are the parents of two children.Their daughter Anna is 17 years old and has asked her parents for permission to marry her boyfriend Alexei. Anna’s ext birthday is in 11 months’ time.Their son Peter is 21 years old. He has had numerous personal problems, including convictions for theft. His various ddictions have also led him to steal from his family, causing considerable financial difficulties for them.Required:

(a) Discuss the legal implications of Rosa and Dimitri’s decision to allow Anna to marry in relation to Anna’s egal capacity. (4 marks)

题型:不定项选择

骨气导对比试验中,震动的音叉臂距外耳道的距离是()。

A.5mm

B.10mm

C.15mm

D.25mm

E.35mm

题型:不定项选择

以下哪项不是确定配送中心数量时主要需要考虑的因素?( )

A.物流费用

B.单个配送网点的规模

C.配送服务水平

D.货物的分布和数量

更多题库