The air leakage of tubular air preheater is larger than that of rotary air preheater ().
A: Right
B: Wrong
A: Right
B: Wrong
B
举一反三
- Air preheater is a heat exchange device which uses the heat of flue gas to heat the air needed for combustion. () A: Right B: Wrong
- 词汇与结构 Warm air is less dense than cool air, and _____ air is less dense than dry air.
- Lignite is easy to be weathered in the air, not easy to be stored and transported for a long distance( ) A: Right B: Wrong
- The dolphin leapt up into the air because Sagan was too near the water. A: Right B: Wrong C: Not mentioned
- The freight rate of air express is much higher than that of other air transportation mode.
内容
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The freight rate of air express is much higher than that of other air transportation mode. A: 正确 B: 错误
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There’s a feeling of unrest nowadays. A: in the air B: on the air C: by air D: in air
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4. From the control tower, air traffic controllers coordinate aircraft movement both ________ and on the ground. A: on the air B: in the air C: at the air D: of the air
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The air inside .a house on office building often has more contaminants（）the heavily polluted air outside. A: than does B: as C: as some that are D: than that of
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智慧职教: Compressed air is supplied by air compressors to air receivers.