题目内容
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[单选题]
天然气民用大气式燃烧器的几何尺寸及有关参数如下:喷嘴直径dj=1.4 mm,喷嘴流量系数μ=0.78,燃气压力H=1 496 Pa,喉部直径为dt=11.66 mm,则燃气耗量为()m3/h。
A.0.28
B.0.26
C.0.24
D.0.22
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A.0.28
B.0.26
C.0.24
D.0.22
A.1.85
B.2.06
C.2.77
D.2.96
A.1.58
B.2.05
C.1.66
D.2.77
A.120.6
B.139.66
C.293.88
D.152.28
A.0.85
B.1.02
C.1.16
D.1.28
A.1 826
B.1 857
C.1 938
D.1 905
A.10.2
B.9.6
C.8.7
D.7.8
A.48.23 MJ/m3,40 MJ/m3
B.40 MJ/m3,30 MJ/m3
C.48.23 MJ/m3,42.3 MJ/m3
D.45 MJ/m3,42 MJ/m3
A.48.23 MJ/m3,40 MJ/m3
B.40 MJ/m3,30 MJ/m3
C.48.23 MJ/m3,42.3 MJ/m3
D.45 MJ/m3,42 MJ/m3
A.5.82 W/mm2,0.68
B.6.01 W/mm2,0.68
C.6.01 W/mm2,0.82
D.5.82 w/mm2,0.82