The ability of coal to release a combustible gas has long been known.
A: submit
B: emit
C: admit
D: permit
A: submit
B: emit
C: admit
D: permit
举一反三
- Fossil fuel contains ① coal; ② Petroleum; ③ Natural gas; ④ Combustible ice. A: ①, ②； B: ②, ④； C: ①, ②, ③, ④. D: --
- I have known her for a long time. / She........................ to me for a long time. A: has known B: has been known C: is known
- 中国大学MOOC: Fossil fuel contains ① coal; ② Petroleum; ③ Natural gas; ④ Combustible ice.
- Coal has been ______ by natural gas as a major source of energy. A: displaced B: deposited C: displeased D: disposed
- It has been known for a long time that there is a first relationship between the heart and the liver.