雷达的脉冲宽度越宽，发射的能量越多，探测距离就越大。
查看答案
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
微信支付 
支付宝支付