[填空题]
A 33% efficient power plant puts out 850 MW of electrical power. C 7vb3odhf8* 6 ygu3sj+*0-cxuaq cqhbooling tqy o.h-;bixn (owers are used (.qyoxhi- bn;to take away the exhaust heat.
(a) If the air temperature is allowed to rise 7.0 $C^{\circ}\,$, estimate what volume of air $(LM^3)$ is heated per day. Will the local climate be heated significantly? $\approx$ $km^3/day$(Round to the nearest integer)
(b) If the heated air were to form a layer 200 m thick, estimate how large an area it would cover for 24 h of operation. Assume the air has density $1.2kg/m^3$ and that its specific heat is about $1.0KJ/kg\cdot\,C$ at constant pressure. $km^2$
