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【简答题】
含尘气体流量3000m3／h，温度500℃，密度0．43kg／m3，黏度3．6×10-5Pa．s。气流中尘粒的密度为2000kg／m3。 采用10层隔板的降尘室，要求除去30μm以上的尘粒，计算降尘室的底面积。
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举一反三
【单选题】We him on his birthday and held a party to it.A．congratulate;celebrateB．celebrate;congratulateC．co
A.
We____ him on his birthday and held a party to ____it. A．congratulate;celebrate
B.
celebrate;congratulate
C.
congratulated;celebrated
D.
congratulated;celebrate
【单选题】Maria proposed that we ______ a party to celebrate the victory of our baseball team.
A.
held
B.
hold
C.
would hold
D.
will hold
【单选题】The author points out the rise of mass media of communication is a complex factor, because
A.
a lot of people like the mass media and it has great influence on people's mind.
B.
the mass media is a success and it requires creative efforts to be made.
C.
the mass media is the most effective, modern way of circulating information.
D.
the mass media aims at the median I. Q. and this fact kills the creative intelligence of people who work in this field.
【单选题】男，35岁．黄疸已1个月，右上腹轻微胀痛，食欲缺乏，经内科治疗无效．查体：肝大，胆囊增大，血胆红素171xmol／L，凡登白直接反应阳性，转氨酶70U，碱性磷酸酶45U，AFΒ>50ng／ml，可能诊断是
A.
黄疸型肝炎
B.
胆总管结石梗阻
C.
肝癌
D.
肝硬化晚期
E.
壶腹周围癌
【单选题】男性，35岁黄疸已1个月，右上腹轻微胀痛，食欲缺乏，经内科治疗无效。查体：肝大，胆囊增大，血胆红素17umol／L，AST70单位，AKP45单位AFP＞5ng／ml，可能诊断是
A.
黄疸性肝炎
B.
胆总管结石梗阻
C.
肝癌
D.
肝硬化晚期
E.
壶腹周围癌
【简答题】电子商务的基本组成要素有哪些？
【简答题】电子商务的 基本组成要素 有哪些?
【简答题】电子商务的基本组成要素有哪些?
【简答题】电子商务的基本组成要素有哪些?
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