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A. The majority of drivers prefer to drive and park themselves.
B. Human drivers become easily distracted or tired while driving.
C. Most drivers feel uncertain about the safety of self-driving cars.
D. Most drivers have test driven cars with automatic braking features.

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A. Serve standardised food nationwide.
B. Put calorie information on the menu.
C. Increase protein content in the food.
D. Offer convenient food to customers.

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空气对流干燥中，空气的作用是( )

A. 载热体
B. 载湿体
C. 既是载热体，又是载湿体
D. 既不是载热体，也不是载湿体

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机械除湿与干燥相比，（）

A. 机械除湿，能耗大，去湿程度不高
B. 机械除湿，能耗小，去湿程度高
C. 干燥，能耗大，去湿程度高
D. 干燥，能耗小，去湿程度不高

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对流干燥中，传质的推动力是（）

A. 物料表面的水汽分压＞空气的水汽分压
B. 物料的水分含量＞空气的水分含量
C. 物料的含湿量＞空气的湿度
D. 物料的水分活度＜空气的相对湿度

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[音频]

A. The majority of drivers prefer to drive and park themselves. B. Human drivers become easily distracted or tired while driving. C. Most drivers feel uncertain about the safety of self-driving cars. D. Most drivers have test driven cars with automatic braking features.

[音频]

空气对流干燥中，空气的作用是( )

机械除湿与干燥相比，（ ）

对流干燥中，传质的推动力是（ ）

A. The majority of drivers prefer to drive and park themselves.
B. Human drivers become easily distracted or tired while driving.
C. Most drivers feel uncertain about the safety of self-driving cars.
D. Most drivers have test driven cars with automatic braking features.

机械除湿与干燥相比，（）

对流干燥中，传质的推动力是（）