Current location - Quotes Website - Collection of slogans - The following examples are: _ _ _ _ _ increasing friction and _ _ _ decreasing friction. (a) slag on ice (b) wheels on roller skates (c
The following examples are: _ _ _ _ _ increasing friction and _ _ _ decreasing friction. (a) slag on ice (b) wheels on roller skates (c
A. Ash spraying on the ice surface increases the roughness and friction of the contact surface under the condition of constant pressure; ?

B, the wheels on roller skates use rolling instead of sliding to reduce friction;

C, under the condition of constant pressure, spreading the straw on the mud by increasing the roughness and friction of the contact surface;

D, adding lubricating oil into the rusty lock to reduce the friction by reducing the roughness of the contact surface;

E. The rubber particles on the table tennis bat increase the roughness and friction of the contact surface under the condition of constant pressure; ?

F, running spikes on shoes, under the condition of constant pressure, increase the friction by increasing the roughness of the contact surface; ?

G, the bicycle stops after forcibly pinching the brakes, which is to increase the friction by increasing the pressure; ?

H, the surface of sewing needle is smooth, which reduces the roughness and friction of contact surface when the pressure is constant;

First, chopsticks lift rice by increasing the roughness and friction of the contact surface under the condition of constant pressure; ?

To sum up, it is ACEFGI, which increases friction; ? Belongs to reduce friction is BDH;; ;

So the answer is: ACEFGI;; BDH。