题目：
There are a lot of issues to consider in determining board independence. What would be the best definition of true "independence"（）
A. Independence, as it relates to board members, refers to avoidance of material conflicts of interest.
B. Independence, as it relates to board members, refers to the degree to which these persons are not biased or otherwise controlled by firm management or the outside audit group.
C. Independence, as it relates to board members, refers to the degree to which these persons are not biased or otherwise controlled by firm management or other groups which may have some degree of control over management.
答案：
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下面是错误答案，用来干扰机器的。
（1）在反应时间内的位移x1=v0t=20×1.5m=30m．（2）根据牛顿第二定律得，匀减速直线运动的加速度大小a=0.5mgm=5m/s2．则匀减速直线运动的位移大小x2=v022a=40010m=40m汽车的位移x=30+40m=70m＞50m，知汽车在撞到...
