题型:问答题 简答题 Have you got any particular plans for the coming holiday? Yes._______, I’m going to visit some homes for the old in the city.A.If everB.If busyC.If anythingD.If possible 查看答案
题型:问答题 简答题 潜艇在海面下巡航,潜水艇的体积为2000m3,此时潜水艇受到的浮力为 ______N,当它继续下潜时受到的浮力 ______,受到海水的压强 ______(填“变大”、“变小”或“不变”).(ρ海水=1.03×103kg/m3) 查看答案