( ) is the highest rank of coal with highest carbon content, high heat content, low sulfur content,but limited supplies.
举一反三
- Auto-tempering occurs after welding when （ ）. A: carbon content of weld is low B: cooling rate is slow C: peak temperature is high D: Ms is high
- The main difference in composition between the tissue fluid and the<br/>plasma is that the contents of the tissue fluid () A: No blood cells B: Low protein content<br/>From<br/>a + content is high C: K<br/>+ content is high<br/>High<br/>content of e.c. with our fabrication: l -
- Burning fuel with a high sulfur content in a diesel engine will （） A: increase thermal efficiency B: cause clogging of the fuel system C: increase the ability of the engine to start in cold weather D: produce corrosion in the cylinder and exhaust system at low load
- A ___________ is a faculty member of the highest academic rank at an institution of a higher education.
- The dry ash free volatile content of a coal is 7%, which is most likely to belong to (). A: Bituminous coal B: Anthracite C: Lignite D: Lean coal