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【单选题】
The poster says that a writer and poet ___ to give us a talk on English next week.A.
is
B.
are
C.
be
D.
will be
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举一反三
【单选题】Under conditions of decreasingcost:
A.
Under conditions of decreasingcost: externalities are irrelevant andinapplicable.
B.
afew large ellers may come todominate the industry.
C.
astrong case can be made forsupplanting complete individualismby some kind of group action.
D.
each of firms in the industry will continue to produce more outputat falling costs per unit.
【单选题】图中螺栓的规定标记是【图片】
A.
螺 栓 GB/T 5782 M10x47
B.
螺 栓 GB/T 5782 M10X40
C.
螺 栓 GB/T 5782 M10
D.
G B/T 5782 螺栓 M10x40
【简答题】Their parent once lived under very severe conditions.
【简答题】Under L/C operations，the bank will effect payment under the following conditions（ ）．
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