单项选择题
A.on a regional basis
B.on a national basis
C.shown orderly
D.appeared from A to W
单项选择题 The American Petroleum Institute recommends that connecting links and anchor shackles be inspected using（）.
单项选择题 The American Petroleum Institute recommends magnetic particle inspection for（）.
单项选择题 Temporary Certificates of Inspection for offshore drilling units are effective until the （）.