A:吊线对灯的拉力与灯所受的重力
B:灯对吊线的拉力与灯所受的重力
C:灯对吊线的拉力与吊线对灯的拉力
D:灯对吊线的拉力与吊线对天花板的拉力
If you can't find your pen ,I would like to _____my pen to you.
Her father uses the Internet____ ____ twice a week.
下图为某山坡地地质剖面图。该地潮湿多雨,岩层存在潜在滑移的风险。岩层倾斜方向与山坡同向称为顺向坡,反之则为逆向坡。若购买图中甲、乙、丙三处商品房,安全风险最大且判断依据合理的是( )