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【单选题】
带电导体球达到静电平衡时,关于球中的场强和电势, 下列叙述中正确的是[ ]A.
导体内的场强和电势均为零
B.
导体内的电势与导体表面的电势相等
C.
导体内的场强为零, 电势不为零
D.
导体内的场强大小和电势均是不为零的常数
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反馈参考答案：
举一反三
【多选题】龙都钢铁公司每年都用投资报酬率、销售利润率、资产周转率对经营绩效进行评价。下列各项中,属于该公司采用上述绩效评价指标的主要原因有( )。
A.
能够控制无预算责任的员工
B.
相对于实物数量或货币价值的绝对值, 比率更易于理解
C.
可以避免短期行为
D.
比率可以用作目标
【简答题】Failure to do sth that must be done by law,especially paying a debt. eg.The company is in d_____ on the loan.
【单选题】compulsory
A.
sth. that must be done because of a rule or law
B.
sth. that must be taught to people
C.
sth. that is so important that cannot be overlooked
D.
sth. that is so embarrassing that cannot be answered
【单选题】what does deadline mean?
A.
a point in time by which sth must be done
B.
time for death
C.
a time or date to begin
D.
a long thin mark on a surface
【简答题】_______________: having the necessary ability, skill, knowledge, etc. 2. _______________: plan carefully how much of sth. will be needed 3. _______________: done regularly and in the same way 4. _____...
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