有一木块静止在水平桌面上关于它的受力下面说法中正确的是 A木块对桌面的压力就是木块所受的重力施力物体是地球b木块对桌面的支持力是 Template




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tomski有一木块静止在水平桌面上关于它的受力下面说法中正确的是 a木块对桌面的压力就是木块所受的重力施力物体是地球b木块对桌面的支持力是 coloring