When the（）is large, the ship is stiff; and when it is small, she is tender.
A. GM
B. free surface
C. longitudinal center of gravity
D. transverse center of gravity
离心式主油泵入口管如呈现负压（）就会漏入油泵造成（）。
When（）,the provision of the bill of lading will be used as a basis for settlement.
A. an event is in connection with the marine peril at sea
B. a matter is linked to a person injury
C. a fact is being contacted by charter party
D. a case is related to dispute about cargo
轴承在基本额定动载荷作用下，运转106转时，发生疲劳点蚀的概率为（）
A. 10%
B. 50%
C. 70%
D. 90%
微信支付 
支付宝支付