Project（71）is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

Project ______is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

● Project（71）is an uncertain event or condition that, if it occurs, has a positive or a negative effect on at least one project objective, such as time, cost, scope, or quality.（71）

已知3×4矩阵A的行向量组线性无关,则秩(AT)等于( )

When a cargo boom or crane is rated at varying capacities，there will be a table at the controls which relates safe working load to（）.

已知（2E-C-1B）AT=C-1，其中E是四阶单位矩阵，AT是四阶矩阵A的转置矩阵，求矩阵A.

Repairing damage to the hull at or above the waterline reduces the threat of（）.

In speed reading, looking at your watch every 5 or 10 minutes ______.

A mark or place at which a vessel comes under obligatory entry，transit，or escort procedure is know as（）.

偏心辊子整形器的偏芯轴分四阶不同尺寸，不同轴线的台阶。其中上接头、（）三辊为同一轴线；（）为另一轴线。