本课配套习题挑战模式1/5
单选题
难度系数:
1.如图杠杆中,属于费力杠杆的是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWIpOaWreWKqOWKm+iHguWSjOmYu+WKm+iHguWkp+Wwj+WFs+ezuw==
- 提示2:IOi0ueWKm+adoOadhuWKqOWKm+iHguWwj+S6jumYu+WKm+iHgg==
- 答案:RA==
QeOAgeaSrOajkuWcqOS9v+eUqOi/h+eoi+S4re+8jOWKqOWKm+iHguWkp+S6jumYu+WKm+iHgu+8jOaYr+ecgeWKm+adoOadhi4gPGJyPkLjgIHot7fot7fmnb/nmoTnnIHotLnlipvlj5blhrPkuo7lsI/lranliLDmlK/ngrnnmoTot53nprvvvIzkuI3lpb3noa7lrpouIDxicj5D44CB5bCP5o6o6L2m5Zyo5L2/55So6L+H56iL5Lit77yM5Yqo5Yqb6IeC5aSn5LqO6Zi75Yqb6IeC77yM5piv55yB5Yqb5p2g5p2GLiA8YnI+ROOAgemxvOerv+WcqOS9v+eUqOi/h+eoi+S4re+8jOWKqOWKm+iHguWwj+S6jumYu+WKm+iHgu+8jOaYr+i0ueWKm+adoOadhi4gPGJyPuaVhemAiUQuIA==
本课配套习题挑战模式2/5
单选题
难度系数:
2.如图所示,所用杠杆属于费力杠杆的是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWIpOaWreWKqOWKm+iHguWSjOmYu+WKm+iHguWkp+Wwj+WFs+ezuw==
- 提示2:IOi0ueWKm+adoOadhuWKqOWKm+iHguWwj+S6jumYu+WKm+iHgg==
- 答案:QQ==
QeOAgemSk+mxvOerv+WcqOS9v+eUqOi/h+eoi+S4re+8jOWKqOWKm+iHguWwj+S6jumYu+WKm+iHgu+8jOaYr+i0ueWKm+adoOadhu+8mzxicj5C44CB55O255uW6LW35a2Q5Zyo5L2/55So6L+H56iL5Lit77yM5Yqo5Yqb6IeC5aSn5LqO6Zi75Yqb6IeC77yM5piv55yB5Yqb5p2g5p2G77ybPGJyPkPjgIHnga3ngavlkK/liqjlpLnlnKjkvb/nlKjov4fnqIvkuK3vvIzliqjlipvoh4LlpKfkuo7pmLvlipvoh4LvvIzmmK/nnIHlipvmnaDmnYbvvJs8YnI+ROOAgemSs+WtkOWcqOS9v+eUqOi/h+eoi+S4re+8jOWKqOWKm+iHguWkp+S6jumYu+WKm+iHgu+8jOaYr+ecgeWKm+adoOadhi4gPGJyPuaVhemAiUEuIA==
本课配套习题挑战模式3/5
单选题
难度系数:
3.下列杠杆中属于费力杠杆的是( )
A: 修树剪 |
B: 切纸铡刀 |
C: 瓶盖起子 |
D: 食品夹 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWIpOaWreWKqOWKm+iHguWSjOmYu+WKm+iHguWkp+Wwj+WFs+ezuw==
- 提示2:IOi0ueWKm+adoOadhuWKqOWKm+iHguWwj+S6jumYu+WKm+iHgg==
- 答案:RA==
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
本课配套习题挑战模式4/5
单选题
难度系数:
4.下列杠杆中,属于费力杠杆的是( )
A: 起子 |
B: 道钉撬 |
C: 筷子 |
D: 钢丝钳 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWIpOaWreWKqOWKm+iHguWSjOmYu+WKm+iHguWkp+Wwj+WFs+ezuw==
- 提示2:IOi0ueWKm+adoOadhuWKqOWKm+iHguWwj+S6jumYu+WKm+iHgg==
- 答案:Qw==
QeOAgei1t+WtkOeahOWKqOWKm+iHguWkp+S6jumYu+WKm+iHgu+8jOaYr+ecgeWKm+adoOadhu+8jOS4jeespuWQiOmimOaEj++8mzxicj5C44CB6YGT6ZKJ5pKs5Yqo5Yqb6IeC5aSn5LqO6Zi75Yqb6IeC77yM5piv55yB5Yqb5p2g5p2G77yM5LiN56ym5ZCI6aKY5oSP77ybPGJyPkPjgIHnrbflrZDliqjlipvoh4LlsI/kuo7pmLvlipvoh4LvvIzmmK/otLnlipvmnaDmnYbvvIznrKblkIjpopjmhI/vvJs8YnI+ROOAgemSouS4nemSs+WKqOWKm+iHguWkp+S6jumYu+WKm+iHgu+8jOaYr+ecgeWKm+adoOadhu+8jOS4jeespuWQiOmimOaEj++8mzxicj7mlYXpgIlDLiA=
本课配套习题挑战模式5/5
多选题
难度系数:
5.下列杠杆中,属于省力杠杆的是( )
A: 起子 |
B: 道钉撬 |
C: 镊子 |
D: 筷子 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWIpOaWreWKqOWKm+iHguWSjOmYu+WKm+iHguWkp+Wwj+WFs+ezuw==
- 提示2:IOecgeWKm+adoOadhuWKqOWKm+iHguWkp+S6jumYu+WKm+iHgg==
- 答案:QSxC
QeOAgei1t+WtkOWcqOS9v+eUqOi/h+eoi+S4re+8jOWKqOWKm+iHguWkp+S6jumYu+WKm+iHgu+8jOaYr+ecgeWKm+adoOadhu+8mzxicj5C44CB6YGT6ZKJ5pKs5Zyo5L2/55So6L+H56iL5Lit77yM5Yqo5Yqb6IeC5aSn5LqO6Zi75Yqb6IeC77yM5piv55yB5Yqb5p2g5p2G77ybPGJyPkPjgIHplYrlrZDlnKjkvb/nlKjov4fnqIvkuK3vvIzliqjlipvoh4LlsI/kuo7pmLvlipvoh4LvvIzmmK/otLnlipvmnaDmnYbvvJs8YnI+ROOAgeett+WtkOWcqOS9v+eUqOi/h+eoi+S4re+8jOWKqOWKm+iHguWwj+S6jumYu+WKm+iHgu+8jOaYr+i0ueWKm+adoOadhu+8mzxicj7mlYXpgIlBQi4g