单项选择题
A.Loading
B.Discharging
C.Crude oil washing
D.Steaming tanks
单项选择题 Which of the following statements is FALSE concerning cranes being installed on the centerline of vessels（）.
单项选择题 Which of the following statement（s）is/are TRUE regarding a twin pedestal crane set（）.
单项选择题 Which of the following statement（s）is/are FALSE regarding a twin pedestal crane set （）.