单项选择题
A stopper used in securing the ground tackle for sea that consists of a grab attached to a turnbuckle is a（）.
A.riding pawl B.buckler C.devil's claw D.locking ring
单项选择题 A splice that can be used in running rigging，where the line will pass through blocks，is a（）.
单项选择题 A snatch block would most likely be used as a（）.
单项选择题 A snatch block is a（）.
