中国20世纪60年代开始进行海洋油气资源的自营勘探和开发。 A: As early as the 1960s, China began to explore and exploit offshore oil and gas resources on its own. B: Since the 1960s, China began to explore and exploit offshore oil and gas resources on its own. C: Beginning from the 1960s, China began to explore and exploit offshore oil and gas resources on its own. D: Until the 1960s, China began to explore and exploit offshore oil and gas resources on its own.

By ( ), with the imported oil accounting for 80%, China is almost becoming a country totally dependent on imported oil.

The role and position of unconventional oil and gas resources in global oil and gas production are becoming more and more important. Which of the following are unconventional oil and gas resources? A: Tight rock oil and gas B: Mud shale oil and gas C: Coalbed methane D: Oil shale E: Oil sands F: Natural gas hydrate

Oil can be conveyed by pipeline from an oil region to a refinery.

The parameters for predicting oil and gas PIIP include . A: Oil (gas) area B: Average thickness of oil (gas) layer C: Single storage coefficient D: Thickness of source rock