In relation to the turning circle of a ship,the term advance means the distance().
A. gained at right angles to the original course
B. gained in the direction of the original course
C. moved sidewise from the original course when the rudder is first put over
D. around the circumference of the turning circle
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危险货物包装物的最高标准是()类包装。
A. I
B. II
C. III
热锻模锻后模块内存在较大的内应力和组织不均匀牲,必须进行()。
一元相关回归分析市场预测法,是根据一个()去预测一个()的市场预测方法。