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【单选题】
 We are ________ at the school gate at ten.
A.
met
B.
to meet
C.
be meeting
D.
will meet
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【单选题】The services that a freight forwarder renders may often range from routine and basic tasks such as()or customs clearance to a comprehensive package of services.
A.
the providing of services
B.
the utilizing of services
C.
the booking of space
D.
the loading and unloading
【简答题】英文:The services that a freight forwarder renders may often range from routine and basic tasks such as the booking of space or customs clearance to a comprehensive package of services covering the tota...
【单选题】用一连续精馏塔分离某二元理想混合物。已知原料液的组成为0.5(易挥发组分的摩尔分数,下同),馏出液组成为0.95,釜残液组成为0.02。若进料量为100kmol/h,则馏出液的流量为()kmol/h。
A.
51.61
B.
48.26
C.
65.18
D.
55.20
【简答题】The services that a freight forwarder renders may often range from routine and basic tasks such as ( )or customs clearance to a comprehensive package of services.
【单选题】用一连续精馏塔分离某二元理想混合物。已知原料液的组成为0.52(易挥发组分的摩尔分数,下同),馏出液组成为0.98,釜残液组成为0.015。若进料量为100kmol/h,则重组分的回收率为()。
A.
97.82%
B.
1.38%
C.
98.62%
D.
47.67%
【简答题】• Originally, a(1)_ _ was a commission agent performing routine tasks on behalf of the exporter or importer such as loading or unloading of goods, (2)_ _, arranging loacal transport,(3)_ for his custo...
【判断题】矩形截面小偏心受拉构件正截面处于承载力极限状态时,正截面上承受的应力均为拉应力,破坏时,混凝土完全退出工作,全部拉力由钢筋承担。
A.
正确
B.
错误
【单选题】一连续精馏塔分离某二元理想混合物,已知进料量F=10 kmol/s,进料组成xF = 0.5(摩尔分率,下同),进料为饱和蒸汽,塔顶产品的组成xD=0.95,塔底产品的组成xW=0.1,系统的相对挥发度α=2。塔底采用再沸器,塔顶采用全凝器,泡点回流, 试求:塔顶易挥发组分回收率为()
A.
0.85
B.
0.89
C.
0.95
D.
0.99
【单选题】一连续精馏塔分离某二元理想混合物,已知进料量F=10 kmol/s,进料组成xF = 0.5(摩尔分率,下同),进料为饱和蒸汽,塔顶产品的组成xD=0.95,塔底产品的组成xW=0.1,系统的相对挥发度α=2。塔底采用再沸器,塔顶采用全凝器,泡点回流, 试求:塔顶产品采出率为()
A.
0.37
B.
0.42
C.
0.47
D.
0.52
【单选题】“晚餐”用泰语怎么说? ()
A.
อาหารเช้า
B.
อาหารไทย
C.
อาหารเย็น
D.
อาหารจีน
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