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【判断题】
eli whitney was noted for inventing the cotton gin and developing the system of mass production of weapons with interchangeable parts. ()A.
正确
B.
错误
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举一反三
【单选题】Design of all the new tools and implements is based on careful experiments with electronic instruments. First, a human “guinea pig” is tested using a regular tool. Measurements are taken of the amount...
A.
is able to design new tools
B.
measures the amount of energy used
C.
enable people to see the muscular movements
D.
visualizes electrical signals
【单选题】Choose the best answer to complete the following sentences. 1.There are times when you may need to ______ data from one format to another.
A.
transfer
B.
invoke
C.
convert
D.
revert
【单选题】Design of all the new tools and implements is based on careful experiments with electronic instruments. First, a human “guinea pig” is tested using a regular tool. Measurements are taken of the amount...
A.
they are twisted and stretched
B.
they are in their normal positions
C.
they are tested with a human “guinea pig”
D.
they are tested with electronic instruments
【单选题】用万用表欧姆挡测电阻,下列说法中错误的是()。 1测量前必须调零,而且每测一次电阻都要重新调零;2每次换挡后都必须重新调零;3待测电阻如果是连在某电路中,应该把它先与其它元件断开,再进行测量;4两个表笔与待测电阻接触良好才能测得较准,为此应当用两只手分别将两只表笔与电阻两端紧紧地握在一起。
A.
①②
B.
②③
C.
③④
D.
①④
【简答题】单向板肋梁楼盖中，板内应配置有哪几种钢筋？
【单选题】( ) 1.There ______ a ma tch( 比赛 ) b e tween C lass 3 and o ur class in ten minutes .
A.
is going to be
B.
is
C.
are
D.
is going to
【判断题】What Dr. Beaumont found out from Alexis's stomach was that the food in the stomach made the muscles contract and the juices pour out, causing the food itself to start up the changes which result in it...
A.
正确
B.
错误
【简答题】I need to be at the airport by6.00 o’clock.(翻译)
【简答题】连词成句。 1. There, melons, are, nine (.) _____________________________________ 2. apple, for, How, much, one (?) _____________________________________
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