某码头上有20名工人装载一批货物，已知每人往一艘轮船上装载2吨货物，装载完毕恰好用了6天，轮船到达目的地后，另一批工人开始卸货，计划平均每天卸货v吨，刚要卸货时遇到紧急情况，要求船上的货物卸载完毕不超

题干

某码头上有20名工人装载一批货物，已知每人往一艘轮船上装载2吨货物，装载完毕恰好用了6天，轮船到达目的地后，另一批工人开始卸货，计划平均每天卸货v吨，刚要卸货时遇到紧急情况，要求船上的货物卸载完毕不超过4天，则这批工人实际每天至少应卸货（　　）

A：30吨

B：40吨

C：50吨

D：60吨

上一题下一题 0.0难度选择题更新时间:2019-12-03 06:50:38

D

Situations	Differences
Situations	Britons (英国人)	Americans
When being knocked into	They will say “sorry” before the other does.	They will ____ the person and expect him to say “sorry”.
When going out for dinner	They will ____ when going out for dinner.	They may wear a normal shirt to go to a good____.
When taking a taxi	They will give an address to the taxi driver and then ____.	They will ____ the taxi driver all the time.