They are________ different sizes, shapes and metals, but they are exactly the same________.
A:不填;in weights
B:of; in weight
C:in; of weight
D:of; weights
悔____ 睁____ 裁____ 拢____ 辩____
诲____ 挣____ 截____ 扰____ 辨____
如图是冰壶比赛的情景.冰壶对冰面的压力是150N,与冰面的接触面积是0.03m2,则冰壶对冰面的压强为 ____ Pa.冰壶被掷出后仍能向前运动,是因为冰壶具有____ ,且受阻力小,运动状态改变慢.