单选题To reduce the amount of catenary you may（）.Ashorten the hawser or increase the tug's speedBlengthen the hawser or reduce the tug's speedCplace your tug in ironsDmake a sharp turn
单选题
To reduce the amount of catenary you may（）.
A
shorten the hawser or increase the tug's speed
B
lengthen the hawser or reduce the tug's speed
C
place your tug in irons
D
make a sharp turn
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