单项选择题
Adjust the （）(中心稳索), please.
A. center tap B. center point guy C. center guy D. center line block
单项选择题 The （）(笨重货) must be handled by jumbo boom or shore crane.
单项选择题 Renew the （）(稳索), please.
单项选择题 The（）(贵重货) must be kept carefully.
