一个游泳池,长50米,宽12米,深2.5米.注满水后一共可装水多少立方米?
50×12×2.5,
=600×2.5,
=1500(立方米);
答:注满水后一共可装水1500立方米.
A chain bridle is used when towing astern because it().
A.is easy to connect
B.provides an effective catenary and absorbs shock due to its weight
C.makes rigging a swivel unnecessary
D.prevents the tow from yawing by the drag of the chains in a seaway
对联的上联是“橘子洲,舟旁洲,舟行洲不行”,下联“天心阁,阁中鸽,鸽飞阁不飞”。这形象地说明了运动和静止相互依存。静止是()
A.运动的衡量尺度
B.运动的内在原因
C.运动的普遍状态
D.运动的存在形式