According to the passage, the first refrigerated railcar used what material as a cooling agent?
Đáp án B
Theo như đoạn văn, chiếc xe tải làm lạnh đầu tiên đã sử dụng nguyên liệu nào như 1 chất làm mát?
A. khí ê-te. B. đá lạnh. C. khí a-mô-ni. D. CFC’s
Dẫn chứng ở đoạn 4: “He solved the shipping problem with the newly invented refrigerated railcar, which was insulated with ice bunkers in each end. Air came in on the top, passed through the bunkers, and circulated through the car by gravity” - (Ông đã giải quyết vấn đề về vận chuyển bằng 1 phát minh mới - xe tải làm lạnh, được trang bị các thùng chứa đá lạnh ở mỗi đầu. Khí lạnh từ đầu xe, đi qua các thùng chứa, và lưu thông bên trong xe bằng lực hút).
The word “constrained” in paragraph 4 is closest in meaning to______.
According to the passage, who was the first person to use artificial refrigeration for a practical purpose?
The word "rough"in the passage is closest in meaning to ___________.
How did Juliette Davidson benefit from the experience of her first job?
What is the main point the writer is trying to make in the last paragraph?
According to the passage, all of the following are true EXCEPT___________.
By discovering and better understanding your own learning styles, you can improve _______.
What can be inferred from paragraph 1 about cold storage before the invention of artificial refrigeration?