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【判断题】
分离任务要求一定，当回流比一定时，在五种进料状况中，冷液进料的q值最大，提馏段操作线与平衡线之间的距离最小，分离所需的总理论塔板数最多。A.
正确
B.
错误
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举一反三
【单选题】What is the function of the epiglottis?
A.
It keeps food/liquid out of the lower airway
B.
It is part of the filter for air in the nasal cavity
C.
It produces sound for speaking
D.
It measures the amount of CO2 in the blood
【单选题】What is the function of the rods?
A.
To fix the cylinder covers and the liners together.
B.
To support the cylinder.
C.
To secure the bedplate, frames and cylinder blocks together,
D.
To stiffen the foundation of the engine.
【简答题】What is the function of the crankshaft?
【单选题】What is the function of the cecum ?
A.
promote peristalsis（蠕动） of the bowel
B.
prevent the backflow of food
C.
breath
D.
digest the food
【简答题】What is the function of the governor?
【单选题】What is the function of the epididymis?
A.
Produces sperm
B.
Stores sperm and facilitates their maturation
C.
Stores sperm and produces seminal fluid
D.
Carries semen out through the penis
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