37. Marine oily water separation system should include all piping and solenoid valve arrangements as required in proper working conditions and without any illegal ______ piping.
(A) corssover
(B) by-pass
(C) connector
(D) communicating
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統計: A(6), B(8), C(4), D(1), E(0) #3833751
統計: A(6), B(8), C(4), D(1), E(0) #3833751