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【单选题】
台阶与建筑出入口之间的平台深度一般不应小于（ ）mm,作为室内外空间的过渡。A.
300
B.
600
C.
1000
D.
1500
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反馈参考答案：
举一反三
【单选题】Two air compressors are provided for the starting air system and should be capable of ________.
A.
charging the starting air containers within one hour
B.
providing the minimum quantity of starting air at all times
C.
supplying all the air necessary to start both the main engine and an auxiliary at the same time
D.
topping off all receivers at the required design pressure
【单选题】Two air compressors are provided for the starting air system and should be capable of ______.
A.
charging the starting air containers within one hour
B.
providing the minimum quantity of starting air at all times
C.
supplying all the air necessary to start both the main engine and an auxiliary at the same time
D.
topping off all receivers at the required design pressures
【单选题】The starting air system usually has _____ to prevent starting if anything is not in order.
A.
stop valves
B.
interlocks
C.
non-return valves
D.
air vents
【单选题】Pump up the starting air reservoirs to their maximum pressure and ______the air reservoirs and air system.
A.
open
B.
close
C.
drain
D.
vent
【单选题】Two air compressors are provided for the starting air system and should be capable of ____.
A.
charging the starting air containers(空气瓶)within one hour
B.
providing the minimum quantity of starting air at all times
C.
supplying all the air necessary to start both the main engine and an auxiliary at the same time
D.
topping off all receivers at the required design pressures
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