A.120° | B.135° | C.150° |
A.30 | B.23 | C.16 |
A.708000340 | B.406000900 | C.90000000 |
A.75° | B.25° | C.135° |
A.123 | B.134 | C.132 |
A.圆柱形物体向下滚时,可以用手推,对实验结果没有影响 |
B.搭斜坡时,要搭正、搭牢,不能歪着,也不能晃动 |
C.测量时,要使卷尺和斜坡的底边垂直 |
A.a | B.b | C.c |
A.140° | B.135° | C.75° |
A.一定是晴天 | B.可能是晴天 | C.不可能是雨天 |
A.比原来轻 | B.比原来重 | C.与原来同样重 |