The unit of heat energy commonly used in physics is the________.
A.degree
B.calorie
C.gallon
D.liter
A.degree
B.calorie
C.gallon
D.liter
A.direction
B.intention
C.intensity
D.heat
A、there is additional profit as long as the price is greater than the marginal cost of the last unit
B、there is additional profit when the marginal cost of a unit is higher than the price
C、there is no more profit when the price is greater than the marginal cost of the last unit
D、price is not important in determining profit
E、none of the above
A.a broken shaft on the freshwater pump
B.an excessive accumulation of scale in the heat exchanger
C.an incorrect thermostatic element operating range
D.lube oil in the cooling water