中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.
当物体受到的力平衡时（ ）
| A: 物体一定处于静止状态 |
| B: 物体一定处于匀速直线运动状态 |
| C: 物体的运动状态不可能改变 |
| D: 物体的运动状态可能要改变 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+54mp5L2T5aSE5LqO6Z2Z5q2i54q25oCB5oiW5YyA6YCf55u057q/6L+Q5Yqo54q25oCB5pe277yM54mp5L2T5aSE5LqO5bmz6KGh54q25oCB77yM5aSE5LqO5bmz6KGh54q25oCB55qE54mp5L2T5Y+X5bmz6KGh5Yqb5L2c55So77yM6L+Q5Yqo54q25oCB5LiN5Y+YPC9wPg==
- 答案：Qw==
PGRpdj7niankvZPlj5flubPooaHlipvkvZznlKjml7bvvIzlpITkuo7lubPooaHnirbmgIHvvIzniankvZPnirbmgIHkv53mjIHkuI3lj5jvvIzniankvZPpnZnmraLmiJblgZrljIDpgJ/nm7Tnur/ov5DliqjvvIzmlYVBQkTplJnor6/vvIxD5q2j56Gu77ybPC9kaXY+
本课配套习题挑战模式2/5
单选题
难度系数：
2.
某人静止站在磅秤上，在下列几对力中能符合二力平衡条件的是（ ）
| A: 磅秤所受的重力和磅秤对地面的压力 |
| B: 人受到的重力和磅秤对人的支持力 |
| C: 人对磅秤的压力和磅秤对人的支持力 |
| D: 磅秤对人的支持力和磅秤受到的重力 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5LqM5Yqb5bmz6KGh55qE5p2h5Lu25piv77ya5Lik5Liq5Yqb5b+F6aG75L2c55So5Zyo5ZCM5LiA5Liq54mp5L2T5LiK77yb5aSn5bCP55u4562J77yb5pa55ZCR55u45Y+N77yb5Zyo5ZCM5LiA55u057q/5LiKLiDlj6rmnInlkIzml7bmu6HotrPov5nlm5vkuKrmnaHku7bvvIzkuKTkuKrlipvmiY3mmK/lubPooaHlips8L3A+
- 答案：Qg==
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
本课配套习题挑战模式3/5
多选题
难度系数：
3.一辆汽车在平直公路上匀速行驶，下列各对力中属于相互平衡的二力是（ ）
| A: 汽车受到的牵引力和汽车受到的重力 |
| B: 汽车受到的重力和地面对汽车的支持力 |
| C: 汽车对地面的压力和汽车受到的支持力 |
| D: 汽车受到的牵引力和汽车受到的阻力 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOeJqeS9k+WcqOW5s+ihoeWKm+eahOS9nOeUqOS4i+S4gOWumuWkhOS6juWkhOS6jumdmeatouaIluWMgOmAn+ebtOe6v+i/kOWKqOeKtuaAge+8jOS6jOWKm+W5s+ihoeeahOadoeS7tuaYr++8muWkp+Wwj+ebuOetieOAgeaWueWQkeebuOWPjeOAgeS9nOeUqOWcqOWQjOS4gOS4queJqeS9k+S4iuOAgeS4lOS9nOeUqOWcqOWQjOS4gOadoeebtOe6v+S4ig==
- 答案：QixE
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.一根电线下吊一盏灯，灯静止时，下列各对力中属于二力平衡的是（ ）
| A: 电线对电灯的拉力和电灯对电线的拉力 |
| B: 灯受的重力和灯对电线的拉力 |
| C: 电线对电灯的拉力和电灯的重力 |
| D: 电线对电灯的拉力和电灯对地球的吸引力 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOi/kOeUqOS6jOWKm+W5s+ihoeeahOWbm+S4quadoeS7tui/m+ihjOWIpOaWre+8jOeJueWIq+imgeazqOaEj+KAnOS9nOeUqOWcqOWQjOS4gOS4queJqeS9k+S4iuKAnei/meS4gOWFs+mUruadoeS7ti4g6L+Y6KaB5bCG5bmz6KGh5Yqb5LiO55u45LqS5L2c55So5Yqb5Yy65YiG5byA5p2l
- 答案：Qw==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.
听到广播传出“请考生做好考前准备”信号后，小红同学将填涂机读卡的2B铅笔放在水平桌面上静止不动时，下列叙述中属于二力平衡的是（ ）
| A: 铅笔所受重力和桌面对铅笔的支持力 |
| B: 铅笔所受重力和铅笔对桌面的压力 |
| C: 铅笔所受重力和桌面所受重力 |
| D: 铅笔对桌面的压力桌面对铅笔的支持力 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5LqM5Yqb5bmz6KGh5p2h5Lu277ya5aSn5bCP55u4562J44CB5pa55ZCR55u45Y+N44CB5L2c55So5Zyo5ZCM5LiA5p2h55u057q/5LiK44CB5L2c55So5Zyo5ZCM5LiA5Liq54mp5L2T5LiK77yM5qC55o2u5LqM5Yqb5bmz6KGh5p2h5Lu26L+b6KGM5Yik5patPGJyPjwvcD4=
- 答案：QQ==
PGRpdj5B44CB6ZOF56yU5omA5Y+X6YeN5Yqb5ZKM5qGM6Z2i5a+56ZOF56yU55qE5pSv5oyB5Yqb77yM5Lik5Liq5Yqb55qE5aSn5bCP55u4562J44CB5pa55ZCR55u45Y+N44CB5L2c55So5Zyo5ZCM5LiA5p2h55u057q/5LiK44CB5L2c55So5Zyo5ZCM5LiA5Liq54mp5L2T5LiK77yM56ym5ZCI5LqM5Yqb5bmz6KGh5p2h5Lu277yM5pWFQeato+ehru+8mzwvZGl2PjxkaXY+QuOAgemTheeslOaJgOWPl+mHjeWKm+WSjOmTheeslOWvueahjOmdoueahOWOi+WKm++8jOS4pOS4quWKm+eahOaWueWQkeebuOWQjOS4lOS9nOeUqOWcqOS4pOS4queJqeS9k+S4iu+8jOS4jeespuWQiOS6jOWKm+W5s+ihoeadoeS7tu+8jOaVhULkuI3mraPnoa7vvJs8L2Rpdj48ZGl2PkPjgIHpk4XnrJTmiYDlj5fph43lipvlkozmoYzpnaLmiYDlj5fph43lipvvvIzkuKTkuKrlipvnmoTmlrnlkJHnm7jlkIzkuJTlpKflsI/kuI3kuIDlrprnm7jnrYnjgIHkvZznlKjlnKjkuKTkuKrniankvZPkuIrvvIzkuI3nrKblkIjkuozlipvlubPooaHmnaHku7bvvIzmlYVD5LiN5q2j56Gu77ybPC9kaXY+PGRpdj5E44CB6ZOF56yU5a+55qGM6Z2i55qE5Y6L5Yqb5qGM6Z2i5a+56ZOF56yU55qE5pSv5oyB5Yqb77yM5Lik5Liq5Yqb5aSn5bCP55u4562J44CB5pa55ZCR55u45Y+N44CB5L2c55So5Zyo5ZCM5LiA5p2h55u057q/5LiK44CB5L2c55So5Zyo5Lik5Liq54mp5L2T5LiK77yM5piv5LiA5a+555u45LqS5L2c55So5Yqb77yM5pWFROS4jeato+ehrjwvZGl2Pg==
