13. As a residual product, _______ is a relatively in expensive fuel-typically its cost around
30% less than distillate fuels.
(A) LSMGO
(B) MDO
(C) MGO
(D) HFO
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統計: A(117), B(155), C(112), D(858), E(0) #2647900
統計: A(117), B(155), C(112), D(858), E(0) #2647900