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【单选题】
强化传热时,增强传热过程中哪一侧的传热系数最有效?A.
传热热阻大的一侧
B.
冷流体侧
C.
热流体侧
D.
传热热阻小的一侧
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举一反三
【单选题】In our English class, the English teacher asked us to stand up and introduce__________.
A.
we
B.
us
C.
our
D.
ourselves
【单选题】In our class, when the bell rang and the teacher came in, it was a _____ for every student to stand up. [ ]
A.
signal
B.
chance
C.
sign
D.
command
【多选题】某施工单位与A材料供应商订立了材料买卖合同，却误将货款支付给B材料供应商，随后施工单位索要回货款支付给A供应商。关于本案中债的性质，下列说法中正确的有（ ）。
A.
向A供应商支付货款属于合同之债
B.
向B供应商支付货款属于合同之债
C.
A、B供应商之间原本没有债的关系
D.
B供应商获得货款形成无因管理之债
E.
B供应商获得货款形成不当得利之债
【单选题】Her interesting face, with a long nose and big eyes, is what makes her _____.
A.
stand by
B.
stand for
C.
stand up
D.
stand out
【单选题】What does the number Yao Ming chose stand for?
A.
two long legs
B.
two long arms
C.
two tall people in love
D.
tow big countries
【单选题】If the engine _____ for a long period, there will be a danger of frost.
A.
must to stand inoperative
B.
has to stand inoperative
C.
must be stood idle
D.
will stand idle
【单选题】Every Monday morning, all the teachers and students in our school stand at ____ as our national
A.
23. Every Monday morning, all the teachers and students in our school stand at ____ as our national flag is raised. A．attention
B.
attentions
C.
at ease
D.
Attentively
【简答题】We have been practicing for so long and so hard that our team should stand a chance __________ winning the ;
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