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问题 选择题

北京师范大学重视塑造师生共同的价值观念和文化品格。而人们的文化素养是多方面的，其中具有方向性作用、处于核心地位的是[ ]

A．社会科学素养

B．自然科学素养

C．世界观、人生观、价值观

D．社会公德、职业道德、家庭美德

答案

答案：C

选择题

下面能正确表示人体肺循环途径的是（　　）

A．右心室→肺静脉→肺部毛细血管→肺动脉→左心房

B．左心室→肺动脉→肺部毛细血管→肺静脉→右心房

C．右心室→肺动脉→肺部毛细血管→肺静脉→左心房

D．左心室→肺静脉→肺部毛细血管→肺动脉→右心房
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单项选择题

In what way does free float differ from total float ？（）

A．Free float is the amount of total float that does not affect the end date, whereas total float is the accumulated amount of free float.

B．There is no difference-the two terms are functionally equivalent.

C．Free float is the amount of time that a schedule activity can be delayed without delaying the early start of any immediately following schedule activities, whereas total float is concerned with delays that do not affect the project finish date.

D．An activity's free float is calculated by subtracting its total float from the critical path's total float.
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