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问题 单项选择题

对风险处理手段的适用性和效益性进行分析、检查、修正和评估，被称为（）。

A.风险识别效果评价

B.风险衡量效果评价

C.风险管理效果评价

D.风险处理效果评价

答案

参考答案：A

单项选择题

Although the bulk of industry resources and energies have focused on developing the fastest (11) or slickest (12) , more and more mindshare is turning to the evolution of the computer interface. Advancements in the areas of input devices, (13) processing and virtual reality could lead to fundamental changes in the way human and computer interact. The technological battlefield of the future will be adding layers between the user and the raw machine to make the (14) as invisible as possible. (15) represents the next evolutionary step for the interface.

A．microprocessor

B．operating systems

C．voice

D．virtual reality
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单项选择题

如图所示，质量为M、半径为R、内壁光滑的半球形容器静止在粗糙水平地面上，O为球心．有一劲度系数为k的轻弹簧一端固定在半球形容器底部O′处，另一端与质量为m的小球相连，小球静止于P点．已知地面与半球形容器间的动摩擦因数为μ，OP与水平方向的夹角为θ＝30°，下列说法正确的是（）．

A．小球受到轻弹簧的弹力大小为mg

B．小球受到容器的支持力大小为2mg

C．小球受到容器的支持力大小为mg

D．半球形容器受到地面的摩擦力大小为mg
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