OG-7

OG- 7  The ice on he front windshield of the can had formed when moisture condensed during the night. The ice melted quickly after the car was warmed up the next morning because the defrosting vent, which blows on the front windshield,was turned on full force.

which of the following, if true, most seriously jeopardizes the validity of the explanation for the speed with whick the ice melted?

A,the shide windows had no ice condensation on them

B.Even though no attempt was made to defrost the back window, the ice there melted at the same rate as did the ice one the front windshield.

C.the speed at which ice on a window melts increases as the temperature of the air blown on the window increases.

D, the warm air from the defrosting vent for the front windshield cools rapidly as it dissipates throughout the rest of the car.

E. the defrosting vent operates efficiently even when the heater, which blows warm air toward the feet or the driver and passengers, is on.

请问这题是考传热常识吗。如果不是，那是考什么逻辑呢。我刚开始复习逻辑部分，找不到南北，问题是看懂的提就能作对，看不懂就傻到底了。

还有体有些是涉及到商业，税收，贸易，法规指定的，等等， 这些体是不是也要有相关知识的，要不一头雾水。解释时能举例一下吗。谢谢