Lashing is the means of securing vehicles and other cargo by ______．A.tomming down methodB.blocking methodC.bracing methodD.using wire ropes，chains，steel bars，and turnbuckles
Lashing is the means of securing vehicles and other cargo by ______．
A.tomming down method
B.blocking method
C.bracing method
D.using wire ropes，chains，steel bars，and turnbuckles
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操纵船舶时，可借助提高螺旋桨的滑失比以增加舵效，对于可变螺距螺旋桨船，这需要_____。A.降低螺旋桨的进速，增大螺旋桨的螺距B.降低螺旋桨的进速，减小螺旋桨的螺距C.提高螺旋桨的进速，增大螺旋桨的螺距D.提高螺旋桨的进速，减小螺旋桨的螺距
某轮计划用新航线前方某单一物标确定转向时机，改驶新航向060°，如该轮陀螺罗经差为2°E，则当该轮实测该导标陀罗方位为多少时方可立刻转向?A.058°B.062°C.060°D.238°