请指出下列杠杆属于哪种类型的杠杆:
(1)羊角锤是______杠杆;
(2)天平是______杠杆;
(3)镊子是______杠杆;
(4)核桃夹是______杠杆;
(5)筷子是______杠杆;
(6)瓶起子是______杠杆;
(7)船桨是______杠杆;
(8)定滑轮是______杠杆;
(9)铡刀是______杠杆;
(10)扫帚是______杠杆;
(11)食品夹是______杠杆;
(12)独轮车是______杠杆;
(13)铁锹是______杠杆;
(14)扳手是______杠杆;
(15)钳子是______杠杆;
(16)钓鱼竿是______杠杆;
(17)道钉撬是______杠杆;
(18)理发剪刀是______杠杆;
(19)面包夹是______杠杆;
(20)剪铁剪刀是______杠杆;
(21)螺丝刀是______杠杆;
(22)撬棍是______杠杆;
(23)缝纫机的脚踏板是______杠杆;
(24)汽车的刹车装置是______杠杆.
邮箱:联系方式: