单项选择题
（） is/are the legal survey institution(s) that stated by PRC.
A.Ship Survey Bureau B.CCS C.Maritime Safety Administration D.all of the above
单项选择题 When carrying out the voyage trial, the M-E is not necessary to take（）trial.
单项选择题 After repair, the voyage trial of the M-E should be done （）
单项选择题 In the M-Emooring trial, the starting trial is carried under（）
