单项选择题

牛顿第二定律的动量表示式为, 即有.物体作怎样的运动才能使上式中右边的两项都不等于零, 而且方向不在一直线上?[ ] A.
定质量的加速直线运动 B.
定质量的加速曲线运动 C.
变质量的直线运动 D.
变质量的曲线运动

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单项选择题

Kendra Corporation’s total utility costs during the past year were 600 during its lowest month. These costs corresponded with 10,000 units ofproduction during the high month and 2,000 units during the low month. What are the fixedand variable components of its utility costs using the high-low method?

450 fixed.
B．

0 fixed.
C．0.300 variable and $0 fixed.
D．

多项选择题

根据企业所得税法律制度的规定，下列各项中属于不得税前扣除项目的有______。 A．企业所得税税款 B．超过规定标准的捐赠支出 C．非广告性质的赞助支出 D．财产保险费

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