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【简答题】
冷却系的作用是什么？
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反馈参考答案：
举一反三
【单选题】Before the experiment ______.
A.
the four divisions were carefully selected to suit a specific programme.
B.
each division was told to reduce its level of productivity.
C.
the staff involved spent a number of months preparing for the study.
D.
the employees were questioned about their feelings towards the study.
【单选题】The word 'particular' in paragraph 3 is closest in meaning to _________.
A.
peculiar
B.
specific
C.
exceptional
D.
equal
【单选题】（ ） is a letter from a bank to a foreign bank authorizing the payment of a specified sum to the person or company named.
A.
Letter of Delivery
B.
Letter of Credit
C.
Letter of Indemnity
D.
Letter of Guarantee
【简答题】John forgot to ________( specif ic) the place where we should meet.
【单选题】There is still a ___________ doubt among them as to the practical value of the building. [ ]
A.
specific
B.
sure
C.
some
D.
certain
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