一个安全的港口，要求船舶在港内不会遭遇（）等风险。

Ⅰ．战争；Ⅱ．敌对行为；Ⅲ．恐怖活动；Ⅳ．停工与限制工作。

A．Ⅰ，Ⅲ

B．Ⅰ～Ⅲ

C．Ⅰ，Ⅳ

D．Ⅱ，Ⅲ

Which of the following is most likely presented on a common-size balance sheet or common-size income statement（）

A. Total asset turnover.

B. Operating profit margin.

C. Inventory turnover.