单项选择题
When general cargo with different amounts in each draft is involved，the checker must use the （）.
A.unit method B.block method C.straight method D.package method
单项选择题 What type of liquid is used in the liquid P/V breaker（）.
单项选择题 What is the minimum standard for making an eye splice in a wire to be used as cargo gear（）．
单项选择题 We’ll adopt the mechanical tallying method（）．
