如图所示一物体放在水平地面上在拉力f1和f2的作用下做匀速直线运动.关于f1和f2的大小关系下列说法正确的是 A.f1>f2b.f1 Template




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tomski如图所示一物体放在水平地面上在拉力f1和f2的作用下做匀速直线运动.关于f1和f2的大小关系下列说法正确的是 a.f1>f2b.f1 coloring