Modern autopilots have many advantages, such as fuel economy, ease of operation.
举一反三
- If rules are stated clearly and briefly, how many advantages do they have?
- the fast development of economy, people in the modern society may have a chance of conducting business.
- The quality of the fuel oil and lube oil （）， Im afraid. A: has much to do with the operation of the engine and its life B: have much to do with the operation of the engine and its life C: has much doing with the operation of the engine and its life D: have much doing with the operation of the engine and its life
- The operation between two fuel injections is called a （）.
- Hydraulic reservoir is used to reserve enough fuel for all conditions of operation.