Pipeline is low cost and reliable. Is it true? （）
举一反三
- Cost of pipeline is very different of underground conditions. Is it right? （）
- Which transport is the most reliable and stable? A: Air B: Pipeline C: Rail D: Water
- 中国大学MOOC: (T/F) The cost of pipeline construction and maintenance is low.
- (T/F) The cost of pipeline construction and maintenance is low. A: 正确 B: 错误
- The cost of negative confirmation is low, but the reliability of the result of positive confirmation is poor. ( )