致使住房产权多元化格局迅速形成的原因是()。
A.城市住房制度改革
B.城市新建住宅小区物业管理体制的确立
C.个人购房比例的迅猛增加
D.住房装饰装修管理体制的改革
参考答案:C
—Bad luck! It's too late!
—It doesn't matter. The movie ______ for only a few minutes. You can't miss it. [ ]
A. has begun
B. has been on
C. began
D. was on
一辆正沿平直路面行驶的车厢内,一个面向车前进方向站立的人对车厢壁施加水平推力F,在车前进s的过程中,下列说法正确的是:
A.当车匀速前进时,人对车做的总功为正功
B.当车加速前进时,人对车做的总功为负功
C.当车减速前进时,人对车做的总功为负功
D.不管车如何运动,人对车做的总功都为零