首页
下列实例中,为了减小摩擦的是A. 手套表面有凸点B. 给齿轮加润滑油C. 运动鞋底有鞋钉D...
试题详情
下列实例中,为了减小摩擦的是( )
A.
![](https://img.xintiku.com/upload/d9/26/d92684c34c8c063a8aa6e895175cca44.png)
手套表面有凸点
B.
![](https://img.xintiku.com/upload/40/45/4045970df70f29d5555e3d1efd99151a.png)
给齿轮加润滑油
C.
![](https://img.xintiku.com/upload/a6/a7/a6a714e331fdb12e67ddc371f6710a6a.png)
运动鞋底有鞋钉
D.
![](https://img.xintiku.com/upload/02/5a/025a5df004baa6ecb2f722b129104043.png)
用力握紧球拍
相关试题
-
下列实例中,为了减小摩擦的是( )
A.![](https://img.xintiku.com/upload/d9/26/d92684c34c8c063a8aa6e895175cca44.png)
手套表面有凸点
B.![](https://img.xintiku.com/upload/40/45/4045970df70f29d5555e3d1efd99151a.png)
给齿轮加润滑油
C.![](https://img.xintiku.com/upload/a6/a7/a6a714e331fdb12e67ddc371f6710a6a.png)
运动鞋底有鞋钉
D.![](https://img.xintiku.com/upload/02/5a/025a5df004baa6ecb2f722b129104043.png)
用力握紧球拍
-
下列实例中,为了减小摩擦的是( )
A.![](https://img.xintiku.com/upload/fa/43/fa43babe0e3c10bcc1eb3c9de078d36e.png)
手套表面有凸点
B.![](https://img.xintiku.com/upload/fe/7e/fe7e6ec12e8a04858870ac8f1022b1ec.png)
给齿轮加润滑油
C.![](https://img.xintiku.com/upload/ec/e1/ece164f42ee4519457b088c4bdffaf2d.png)
运动鞋底有鞋钉
D.![](https://img.xintiku.com/upload/5c/53/5c532e02cdfef433fbd29691ebdb2e06.png)
用力握紧球拍
-
如图所示的四个实例中,减小摩擦的是( )
A.![](https://img.xintiku.com/upload/b8/c8/b8c81001f6a062be2c352a0a9e73369b.png)
鞋底有凹凸不平的花纹
B.![](https://img.xintiku.com/upload/99/8a/998a20818c1881843d6604bef170e2b8.png)
在轴承中加润滑油
C.![](https://img.xintiku.com/upload/16/32/1632cecd74b39c599f2c2f315d4c8303.png)
打球时用力握紧球拍
D.![](https://img.xintiku.com/upload/be/9d/be9d8f5c046a0ba582c03cdd8bdbbe7c.png)
乒乓球拍上贴有橡胶皮
-
如图所示的四个实例中,减小摩擦的是( )
A.![](https://img.xintiku.com/upload/9b/6c/9b6c74fb98a3696af6e0f4597b028a5d.png)
鞋底有凹凸不平的花纹
B.![](https://img.xintiku.com/upload/0a/a1/0aa1790c1ce9316f05c05cd0d04047b5.png)
在轴承中加润滑油
C.![](https://img.xintiku.com/upload/9d/53/9d5375834bd20065f4c3da8bbe8027d5.png)
打球时用力握紧球拍
D.![](https://img.xintiku.com/upload/91/48/9148c1d5518b451eee33f8f0a8e5f7a1.png)
乒乓球拍上贴有橡胶皮
-
如图所示的四个实例中,目的是为了减小摩擦的是( )
A.![](https://img.xintiku.com/upload/2e/9c/2e9c7e515c0d54b9161c14d06ceb90c8.png)
打球时用力握紧球拍
B.![](https://img.xintiku.com/upload/01/f9/01f9900c0a5dd051645636d372070baa.png)
乒乓球拍上贴有橡胶皮
C.![](https://img.xintiku.com/upload/4a/76/4a763e83cfc36e09c8831d02bddc4c5a.png)
运动鞋底做成凹凸不平的花纹
D.![](https://img.xintiku.com/upload/68/91/6891189a9cff96443e627888024ec6b8.png)
旱冰鞋下装有滚轮
-
如图所示的四个实例中,目的是为了减小摩擦的是( )
A.![](https://img.xintiku.com/upload/be/b3/beb306077db8c32a0df5ef323e93000e.png)
打球时用力握紧球拍
B.![](https://img.xintiku.com/upload/ea/fc/eafc3400c6b3456c163dcf6ceb94cb03.png)
乒乓球拍上贴有橡胶皮
C.![](https://img.xintiku.com/upload/b9/4b/b94be4e3f7d883460dacd7d72a002e61.png)
运动鞋底做成凹凸不平的花纹
D.![](https://img.xintiku.com/upload/75/55/755523ca7fed19265173688da018ed67.png)
旱冰鞋下装有滚轮
-
如图所示的四个实例中,目的是为了减小摩擦的是( )
A.![](https://img.xintiku.com/upload/ca/ab/caabc88a413d7e983ec1285f7c76de8b.png)
打球时用力握紧球拍
B.![](https://img.xintiku.com/upload/02/ec/02ec700ddf849f316e0d4656b64957ef.png)
乒乓球拍上贴有橡胶皮
C.![](https://img.xintiku.com/upload/bd/37/bd3738b265fd3d7300f89f613e76fc7f.png)
运动鞋底做成凹凸不平的花纹
D.![](https://img.xintiku.com/upload/bb/98/bb986528323967d1d9226e0b7e9f08b8.png)
旱冰鞋下装有滚轮
-
如图所示的四个实例中,目的是为了减小摩擦的是( )
A.![](https://img.xintiku.com/upload/fc/1d/fc1dcdad577fc941517788be17ee2b8e.png)
打球时用力握紧球拍
B.![](https://img.xintiku.com/upload/91/32/91327e515309510ce34c8df48d9ccd4e.png)
乒乓球拍上贴有橡胶皮
C.![](https://img.xintiku.com/upload/aa/25/aa258a51097989363307335e3f74dc91.png)
运动鞋底做成凹凸不平的花纹
D.![](https://img.xintiku.com/upload/3c/06/3c060fab12480fe1dd87700ec06282d1.png)
旱冰鞋下装有滚轮
-
如下图所示的四个实例中,目的是为了减小摩擦的是( )
A.![](https://img.xintiku.com/upload/61/56/615625e8cf608bb9a8600d6185ae7196.png)
打球时用力握紧球拍
B.![](https://img.xintiku.com/upload/e7/68/e7682babb4f5b85d6456bbffe271abb3.png)
乒乓球拍上贴有橡胶皮
C.![](https://img.xintiku.com/upload/f3/79/f379d0c802019d7b905b79bb64767ca0.png)
旱冰鞋下装有滚轮
D.![](https://img.xintiku.com/upload/5e/7e/5e7e7758173cd35f6be83670ffda2436.png)
运动鞋底做成凹凸不平的花纹
-
如下图所示的四个实例中,目的是为了减小摩擦的是( )
A.![](https://img.xintiku.com/upload/a0/87/a0877f5448af6c56d9a3dcc3437b4810.png)
打球时用力握紧球拍
B.![](https://img.xintiku.com/upload/ce/c1/cec19cf689ccc404ff78d50afc325d74.png)
乒乓球拍上贴有橡胶皮
C.![](https://img.xintiku.com/upload/6a/03/6a03edbaee68cb3c5dfd7ee496439f2d.png)
旱冰鞋下装有滚轮
D.![](https://img.xintiku.com/upload/7a/ff/7affdba218a24e1202459a643102db99.png)
运动鞋底做成凹凸不平的花纹