【单选题】The writer explains the boiling water by using ______.
【单选题】One of the requirements for producing vapor is that the water ______ to its boiling point.
【单选题】当法官要求撤销某一证据的有效性时,陪审团反而更容易受这一证据影响的原理是:
【单选题】After being boiled in the boiling water, the coffee beans ____________.
C.
made the water taste bitter
D.
made the water taste better
【单选题】The boiling water in the kettle decreases because it ______ into vapor. In other words, it is vaporizing or evaporating.
【单选题】The boiling of water is a
A.
physical change because the water merely disappears
B.
physical change because the gaseous water is chemically the same as the liquid
C.
chemical change because heat is needed for the process to occur
D.
chemical and physical damage
【单选题】Because of the reduced _____ in the vacuum boiling evaporator, some of the sea water boils as it flows through the tubes.
【单选题】Water _____ at 100 degrees centigrade.