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问题 单项选择题

根据《证券投资基金法》的规定，基金运作方式可以采取( )。

A．封闭式和开放式

B．独立式和联合式

C．合作式和委托式

D．独立式和委托式

答案

参考答案：A

单项选择题

A 58-year-old client on a mental health unit has lost control, despite having been properly medicated, and is threatening to harm himself and others. He has been placed in four- point restraints. Which nursing measure should be taken next

A. Release one restraint every 15 minutes.
B. Have a staff member stay with the client at all times.
C. Leave the client alone to reduce his sensory stimulation and allow him to regain control.
D. Restrict fluids until the restraint period is over.
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选择题

如图所示，在光滑的水平桌面上有一物体A，通过绳子与物体B相连，假设绳子的质量以及绳子与定滑轮之间的摩擦力都可以忽略不计，绳子不可伸长。如果mB="3" mA，则绳子对物体A的拉力大小为

A．mB

B．mA

C．3 mA

D．mB
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