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【单选题】
()有一并联管路,如图所示,两段管路的流量,流速、、管长及流动阻力损失分别为qv1,u1,d1,L1,wf1及 qv2,u2,d2,L2,wf2。若d1=2d2 ,L1=2L2。当两段管路中流体均作层流流动时,qv1/qv2=( )*【图片】
A.
1
B.
2
C.
4
D.
8
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【多选题】出境旅游领队在出境旅游中所扮演的角色是()。
A.
旅游团的领导和代言人
B.
旅游计划的实施者
C.
旅游团的服务人员
D.
游客合法权益的维护者
E.
文明旅游的引导者
【单选题】That trumpet(小号) player was certainly loud. But I wasn’t bothered by his loudness _______ by his lack of talent.
A.
so much as
B.
rather than
C.
as
D.
than
【单选题】What does the proverb “To learn to play the trumpet, you have to play the trumpet” mean during the process of learning English?___________
A.
If you want to be good at trumpet, you have to practice it frequently.
B.
If you want to learn how to speak, you have to speak.
C.
If you do not have a try, you will never make a progress.
D.
Learning a skill is important.
【简答题】We can accept your order payment is made in advance, including the transportation expenses.A. A.in the belief that B.in order that C.on the excuse that D.on condition that
【单选题】根据国家的有关规定,将突发公共安全事故分为4个等级,分别用不同的颜色进行标记,则用橙色进行标记所代表的是几级突发公共安全事故?
A.
四级
B.
三级
C.
两级
D.
一级
【多选题】出境旅游领队在出境旅游中扮演的角色是()
A.
旅游团的领导和代言人
B.
旅游计划的实施者
C.
旅游团的服务人员
D.
游客合法权益的维护者
E.
文明旅游的引导者
【单选题】出境旅游领队是出境旅游的领导者和代言人,其主要职责是
A.
介绍情况和全程陪同、落实旅游合同、组织和团结工作、转移过程中的讲解
B.
介绍情况和全程陪同、落实旅游合同、组织和团结工作、联络工作
C.
介绍情况和全程陪同、转移过程中的讲解、组织和团结工作、联络工作
D.
介绍情况和全程陪同、转移过程中的讲解、落实旅游合同、联络工作
【单选题】We can accept your order _payment is made in advance.
A.
in that
B.
in order that
C.
in case
D.
on condition that
【简答题】Live Music——Late Night Jazz Enjoy real American from Herbie Davis, the famous trumper(小号)player. Place: The Jazz Club           Dates: June 15-23 Price: $100-150               Time: 10p.m.till...
【单选题】We can accept your order () payment is made in advance.
A.
in the belief that
B.
in order that
C.
so that
D.
on condition that
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