Smoke Exhaust and Ventilation System
举一反三
- The mechanical exhaust valve operation system is replaced by______<br/>in an electronic<br/>controlled ME engine. A: a system with a Hydraulic Power Supply (HPS) unit B: a system with roller guides for exhaust valves C: a system with an electronically controlled Alpha Lubricator D: a system directly powered by electric motor
- Turbocharging system may be designed to operate on either the （） or the constant pressure exhaust system.
- Which of the following is not an advantage of central parallel ventilation?( ) A: The ventilation system is basically independent and safe B: Centralized layout of industrial sites C: Convenient management D: Less coal-pillar loss
- In the （） pressure charging system the pulse of energy that occur as the exhaust is released from the cylinder to improve the output of the turbocharger.
- If there is nitrogen oxide in the smoke produced by the ship, it will lead to the generation of photochemical smoke, acid rain, etc. Which of the following measures can not reduce the nitrogen oxide content in the smoke?_____ A: Add water to fuel B: Recycle part of exhaust gas C: Using SCR D: Burning heavy oil