What is it       apparatus that cools the motor?

194. What occurs when rising air cools to the dew point? ______ .

When lava cools, it becomes A: liquid. B: water. C: smoke. D: hard.

中国大学MOOC: When water cools, but does not freeze, the molecules move ______________ and take up ______________ space.

When the engine cools down and coolant contracts, the vacuum draws the coolant back into the radiator in order to make it always completely full.

It is said that the best time to visit the city is June or July, ( ) the South American winter cools the city.( ) A: which B: when C: where D: on which

It is said that the best time to visit the city is June or July, ________ the South American winter cools the city. A: where B: which C: on<br/>which D: when

Countries bordered by the sea have a pleasant （） climate because the sea warms the coast in winter and cools it in summer. A: arboreal B: aquatic C: maritime D: ocean

When water cools, but does not freeze, the molecules move ______________ and take up ______________ space. A: Faster, less B: Faster, more C: Slower, less D: Up, less

What are the most important reasons for using water fog to fight fires?（） A: Smothers burning surfaces，organically destroys fuel B: Cools fire and adjacent surfaces，provides protective barrier C: Reaches areas not protected by steam or CO₂ smothering systems D: Allows fire to be attacked from leeward，saturates liquid surface