液体在压强增大时,体积被压缩而减小,密度增大,这一性质称为流体的() A.热胀性 B 发布时间:2019-01-16 15:57 │ 来源:www.tikuol.com 题型:单项选择题 问题: 液体在压强增大时,体积被压缩而减小,密度增大,这一性质称为流体的()A.热胀性B.重力特性C.黏滞性D.压缩性
题型:单项选择题 As a film star she was a success, but as a wife she was _____ failure, so their marriage ended in _____ failure. [ ]A. /; / B. /; a C. a; a D. a; / 查看答案
题型:单项选择题 倾角为的斜面与水平面保持静止,斜面上有一重为G的物体A,物体A与斜面间的动摩擦因数.现给A施以一水平力F,如右图所示.设最大静摩擦力与滑动摩擦力相等(sin 37°=0.6,cos 37°=0.8),如果物体A能在斜面上静止,水平推力F与G的比值可能是( )①3 ②2 ③1 ④0.5A.①②③B.①③④C.②③④D.①②④ 查看答案