单选题The condition where a ship on the end of a tow line is riding a wave crest at the same time as its tug rides a wave crest is known as riding in（）.AsynchronismBharmonyCcheckDstep
单选题
The condition where a ship on the end of a tow line is riding a wave crest at the same time as its tug rides a wave crest is known as riding in（）.
A
synchronism
B
harmony
C
check
D
step
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