If a glass of water is on a table with a piece of paper under it, it is relatively easy to pull the paper out without disturbing the glass very much if the pull is done very quickly. This is because, with a quick pull: A: the force on the glass will be less. B: the momentum of the paper will be greater. C: the time for the pull will be less. D: the coefficient of kinetic friction will be less. E: None of the others.

以下哪一个属性不属于力导向布局的特有属性？ A: linkStrength B: gravity C: friction D: size

Without friction, there could be no brake.

Given the self impedance at the fault location and the split coefficient of a certain power source to the fault location, the transfer impedance from the power source to the fault location should be ( ). A: self impedance times the split coefficient B: self impedance dividedby the split coefficient C: uncertain

______ no friction, an automobile could not move. A: Was there B: Were there C: There was D: If there was