单选题For the purpose of（）tank or hold washings from any vessel，an application shall be made to Harbor Authorities for approval.AdischargingBrecirclingCloadingDtaking in
单选题
For the purpose of（）tank or hold washings from any vessel，an application shall be made to Harbor Authorities for approval.
A
discharging
B
recircling
C
loading
D
taking in
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