单项选择题
Backstays are（）.
A.running rigging leading aft from the masts B.running rigging leading forward from the masts C.standing rigging leading aft from the masts D.standing rigging from the cross trees to the mast head
单项选择题 All the damage and shortage，（）those incurred after discharge and before delivery to receivers，should be noted in the discharging report.
单项选择题 A sling is a device used in（）.
单项选择题 A large basin cut into the shore，closed off by a caisson，and used for drydocking of ships is known as a（）.
