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【单选题】
盆花水分管理时,最容易犯的错误是A.
浇水不足
B.
浇水过多
C.
浇水适量
D.
浇拦腰水
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皮皮学刷刷变学霸
举一反三
【简答题】A．The density of the water droplets in the air. B．The size of the water droplets. C．The temperature of the water droplets. D．The purity of the water vapor.
【单选题】All the _________ things need air and water. Without air or water, nothing can stay _______.
A.
living; living
B.
living; alive
C.
alive; alive
D.
alive; living
【单选题】The water cycle refers to the constant movement of water from land to sea to air and back again.
A.
Y
B.
N
C.
NG
【简答题】Air is to man what fish to water.
【简答题】The water circle refers to the ______ of water from land to sea to air and back again.
【单选题】The purpose of an air compressor unloading device is to _____.
A.
drain water from the air receiver
B.
drain water from the cylinders
C.
delay the compression process until the motor is up to speed
D.
check pump alignment
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