CARGO SWEAT will form when_______.

CARGO SWEAT will form when_______.

A.the steel in cargo hold is exposed to warmer air having a dewpoint higher than its temperature

B.the steel in cargo hold is exposed to cooler air having a dewpoint lower than its temperature

C.falling ambient temperature causes the temperature of the ship's structure to drop below the dewpoint of the air in the hold

D.increasing ambient temperature causes the temperature of the ship's structure to go higher than the dewpoint of the air in the hold

正确答案是A