某厂新建锅炉房,设置两台SHL6-1.25-AⅡ型锅炉。锅炉排污率为6.3%,凝结水回收率为55%。若采用大气热力除氧,需耗用蒸汽()t/h。已知除氧使用锅炉产生的蒸汽hq=2725kJ/kg;除氧器工作压力为0.02MPa,出水参数tcs=104℃,hcs=435kJ/kg;软化水参数tzr=13℃,hzr=54kJ/kg;凝结水参数tns=95℃,hns=398kJ/kg。除氧器效率η=0.98,排汽损失约为总耗气量的1%。
A. 1.02
B. 1.15
C. 1.18
D. 1.25
Fifteen years ago, I entered the Boston Globe, which was a temple to me then. It wasn’t easy getting hired. But once you were there, I found, you were in. Globe jobs were life-guaranteed until (36) For 15 years I had prospered there—moving from an ordinary reporter to foreign (37) and finally to senior editor. I would have a (38) of security if I stuck with it. Instead, I had made a (39) to leave. I entered my boss’s office. Would he rage I wondered. He had a famous (40) . "Matt, we have to have a talk," I began (41) . "I came to the Globe when I was twenty-four. Now I’m forty. There’s a lot I want to do in life. I’m (42) . " I handed him a letter that explained everything. It said that I was leaving to start a new (43) company. We were at a rare turning point in history. I wanted to be directly engaged in the change. "I’m glad for you," he said, quite out of my expectation. " (44) . Some of that we can deal with. But much of it we can’t," he went on. "I wish you all the luck in the world," he concluded. " (45) ." Later, I had a final talk with Bill Taylor, chairman and publisher of the Boston Globe. He had turned the Globe into a billion-dollar property. "I’m resigning, Bill," I said. He listened while I gave him the story. (46) . After a pause, he said, "Golly, I wish I were in your shoes. \ Fifteen years ago, I entered the Boston Globe, which was a temple to me then. It wasn’t easy getting hired. But once you were there, I found, you were in. Globe jobs were life-guaranteed until (36) For 15 years I had prospered there—moving from an ordinary reporter to foreign (37) and finally to senior editor. I would have a (38) of security if I stuck with it. Instead, I had made a (39) to leave. I entered my boss’s office. Would he rage I wondered. He had a famous (40) . "Matt, we have to have a talk," I began (41) . "I came to the Globe when I was twenty-four. Now I’m forty. There’s a lot I want to do in life. I’m (42) . " I handed him a letter that explained everything. It said that I was leaving to start a new (43) company. We were at a rare turning point in history. I wanted to be directly engaged in the change. "I’m glad for you," he said, quite out of my expectation. " (44) . Some of that we can deal with. But much of it we can’t," he went on. "I wish you all the luck in the world," he concluded. " (45) ." Later, I had a final talk with Bill Taylor, chairman and publisher of the Boston Globe. He had turned the Globe into a billion-dollar property. "I’m resigning, Bill," I said. He listened while I gave him the story. (46) . After a pause, he said, "Golly, I wish I were in your shoes. \
有一座天然气中低压调压站,设一台雷诺式调压器,调压站的进口压力P1≥0.02MPa,燃气密度ρ0=0.78kg/m3,若拟选DN150调压器时,Q’=885m3/h,△P’=1000Pa,P0’=0.78kg/m3,调压器出口压力为P2=0.003MPa,过滤器的阻力为0.005MPa,则调压器流量为()。
A. 3 066 m3/h
B. 3 200 m3/h
C. 3 305 m3/h
D. 3 726 m3/h