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【单选题】
用于加热冷凝的液体,使其再受热汽化,且为蒸馏过程的专用设备( )。A.
加热器
B.
预热器
C.
再沸器
D.
冷却器
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举一反三
【单选题】Today the forests are getting ____________, we must ________ down too many trees.
A.
more and more, prevent people cutting
B.
fewer and fewer, stop people cutting
C.
smaller and smaller, keep people cutting
D.
bigger and bigger, keep people from cutting
【单选题】Why are hobbies today more important than ever?
A.
We need something to relax.
B.
We have more free time.
C.
We realize their importance.
D.
We can get pleasure from hobbies.
【多选题】半导体核辐射探测器通常适用于低温条件下,同时也把前放的第一级放大电路置于该低温平台,其目的在于
A.
降低探测器漏电流噪声中的散粒噪声
B.
降低前放第一级放大电路的热噪声
C.
降低探测器漏电流噪声中的低频噪声
【单选题】Today more and more lenders rely on a/an______as a measure of corporate performancebecause it 'images' the probability distribution of future cash flows in relation to debt capacity.
A.
balance sheet
B.
income statement
C.
cash flow statement
D.
retained earnings statement
【简答题】In today's world, we rely on computers as never before. They are used for everything from ordering a pizza to running hospitals and military defense systems. Banking and credit card information is sto...
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