In machinery space, the valves, pipes should be（）<br>A:arranged as close to each other as possible to save space<br>B:arranged far away from each other for convenient operation<br>C:be fixed or clamped to avoid vibration<br>D:kept easy removable as to convenient repairing work

In machinery space, the valves, pipes should be（）
A:arranged as close to each other as possible to save space
B:arranged far away from each other for convenient operation
C:be fixed or clamped to avoid vibration
D:kept easy removable as to convenient repairing work

出自：海船船员证

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