Wood or steel hatch covers are made（）by tarpaulins.<br>A:watertight<br>B:resistant to water<br>C:so safe that no water will affect the hold<br>D:so strong that no water will come into the hold

Wood or steel hatch covers are made（）by tarpaulins.
A:watertight
B:resistant to water
C:so safe that no water will affect the hold
D:so strong that no water will come into the hold

出自：海船船员证

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