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In our daily life, some famous sayings and sayings we come into contact with contain rich physical knowledge, which are reflected in the following famous sayings and sayings.
a. Tofu can't be lifted with hemp rope; Because when the pressure is constant, if the stress area is small, the pressure will be large; Therefore, a does not match the meaning of the question;

B, the fan has a cool breeze, which is suitable for summer but not winter. It is because the air flow is accelerated, which makes the sweat evaporate faster and thus cool; Instead of lowering the air temperature; Therefore, the meaning of the b symbol;

C, a drop of water can see the sun, and one thing can see the spirit; Because you can see the real image of the sun through a drop of water; Therefore, c does not match the meaning of the question;

D, people who don't see it smell it first, which is judged according to the different timbres of different people; Therefore, d does not match the meaning of the question;

so choose B.