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【简答题】
在通过( )的剖面上,螺纹的( )称为牙型。常见的螺纹牙型有 ( )、( )、( )、( )、( )等。其中标准螺纹有( )种,其特征代号分别为( )、( )、( )、( );非标螺纹为( )螺纹,无特征代号。
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举一反三
【简答题】A．Children begin to work from an earlier age than before. B．Many students follow a formal vocational program. C．It is not so expensive to train professionals. D．There are not enough training places fo...
【简答题】A．Many students postpone finding jobs to work for a higher degree. B．Graduate students usually specialize in a particular field of study. C．The tuition fees for graduate students are relatively inexpe...
【单选题】According to the author, many students work in order to pay for the luxuries.
A.
T
B.
F
【简答题】完形填空。 Every summer a great many students travel to other countries looking for work and adventure. Most of the 1 are in seasonal work, mainly connected with tourism and 2 . The pay is usually poor, bu...
【简答题】Japanese students work very bard but many are unhappy. They feel heavy pressures( 压力 ) from their parents. Most students are always told by their parents to study harder and better so that they can ha...
【单选题】The problem is very difficult, so many students can't ____. [ ]
A.
work them out
B.
work it out
C.
work out them
D.
work out it
【单选题】According to the author, many students work in order to pay for the_____, expensive but usually not that useful stuff.
A.
declines
B.
burgers
C.
luxuries
D.
scapegoats
【单选题】The author believes that ______.
A.
many students would like to work to pay for tuition
B.
few students would like to work to pay for tuition
C.
good medical students would like to work to pay for tuition
D.
a few students would like to work to pay for tuition
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