49. What is the main purpose of dunnage?
举一反三
- What is the main purpose of dunnage（）. A: To act as ballast for light vessels B: To provide ventilation and drainage for cargo C: To secure the tarpaulins in place D: To support weakened bulkhead
- What is the main purpose of dunnage? A: To act as ballast for light vessels B: To provide ventilation and drainage for cargo C: To secure the tarpaulins in place D: To support weakened builkheads
- What is the main purpose of the report?
- What is the main idea of the article? What is the purpose of the passage?
- What is the main purpose of the reading passage?