7. B (A= the nickname!)
8 A. (= more than 1.000 have been sunk)-->C more than 100 a year for Occidental Petroleum
9. B
10. Because the friction creates huge amounts of heat; it gets very /extremely hot
11. Danger of catastrophic explosions
12. C
13. A
14. A
15. B
16. B
17. No, because they also use oil tankers --> the stress is on oil tankers
18. B
19. It's too dirty/heavy/not explosive enough
20. C
21. A (hydro carbons)
22.B
23. Diesel, jet fuel and petrol
24. C