问题
单项选择题
在气流干燥系统中，（）是热质交换的介质，因此在叶丝快速干燥过程中，其与叶丝之间进行着快速的传热与传质过程。
A.控制水
B.工艺气流
C.蒸汽
D.燃烧炉
答案
参考答案：B
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在气流干燥系统中，（）是热质交换的介质，因此在叶丝快速干燥过程中，其与叶丝之间进行着快速的传热与传质过程。
A.控制水
B.工艺气流
C.蒸汽
D.燃烧炉
参考答案：B
完形填空(共15小题;每小题1分,满分15分) 46 blind, deaf, unable to walk or use your hands easily is something that most people can’t imagine. But many people 47 these challenges 48 Liz Smith. Liz can’t use her arms or legs well, and normal things like answering the telephone,opening and 49 the door or carrying things have always been difficult for her.Then one day last year,a friend of her said that she would like to help her out. She talked to “Animal Helpers ” to see if it would be possible for her to get a specially 50 dog. 51 six months of training with a dog at “Animal Helpers”, Liz smith was able to 52 him home. Her dog’s name is “Lucky” --- a good name for him 53 Liz feels lucky to have him. 54 does Lucky help her? Well, he has been trained to understand many different 55 .For example, when Liz says, “Lucky, fetch my book!” and he 56 at once. He is very clever and understands many English words ,57 some difficult 58 like “upstaris”. “Animals Helpers” is an organization 59 to help disabled people .60 is very important that it doesn’t run out of money. The donation is greatly appreciated and the money is well used to help disabled people like Liz.
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