The Chief Mate must ascertain that the deck loads are stowed in such a manner as().
A. not to affect the draught trim
B. not to affect the cargo ventilation
C. not to affect the free surface
D. not to affect the vessel's stability
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计算题:有一原木,长为8米,梢头直径18cm,大头直径26cm,求其材积。
攻丝前的底孔直径应大于螺纹标准中规定的螺纹内径。
A. 正确
B. 错误