A hot air start pipe indicates that there is （）.

The air is less dense on a hot humid day than a cool dry day.

词汇与结构Hot trim air from the bleed air system is added to the pack conditioned air to _____the temperature in each zone. A: increase B: obtain C: evaluate D: control

The people were happy because ______. A: there was a lot of food B: it was dangerous C: the balloon was in the air D: they were hot

Without air protection, the sun's rays______. A: will become very cold B: will do good to human beings C: will become hot D: will do harm to human beings

Match the three people to the jobs which suit them best.Pola: I like to dress up as a princess and play with children. A: picking fruit B: dressing up in Disneyland C: chasing hot air balloons

You feel cool when you are near a lake or an ocean because （）. A: the water is cold B: the earth is hot C: the water is colder that the earth D: the cool air from the water moves towards the land

过站期间如果外界温度在以上时将缝翼保持在形态1可以避免警告（） A: 30°C,AIR L（R） WING LEAK B: 30C, BREAK HOT C: 25C,WING TK L（R） LO LVL D: 25C,AIR L（R） WING LEAK

______, they went swimming. A: Being a hot day B: It was a hot day C: Due to a hot day D: The day being hot

It was ____ everyone went to the beach. A: such a hot weather that B: a so hot weather that C: such hot weather that D: too hot weather that