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【单选题】
变压器的短路损耗（ ）。A.
全部为铜耗
B.
全部为铁耗
C.
主要为铁耗
D.
主要为铜耗
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【简答题】热电偶的热电动势大小不仅与热端温度有关,还与冷端温度有关。只有冷端温度( ),热电动势才是热端温度的单值函数关系。
【单选题】环境为III类区域的空气、工作人员手微生物监测合格的标准分别是
A.
细菌总数≤10cfu/m3≤5cfu/cm2
B.
细菌总数≤100cfu/m3≤5cfu/cm2
C.
细菌总数≤200cfu/m3≤5cfu/cm2
D.
细菌总数≤300cfu/m3≤10cfu/cm2
E.
细菌总数≤500cfu/m3≤10cfu/cm2
【单选题】The kind of humor I like is the thing ________ makes me laugh for five seconds and think for ten minutes.
A.
． that
B.
． /
C.
． what
D.
． it
【简答题】A．They lived in large groups. B．They used sand as insulation. C．They kept fires burning constantly. D．They faced their homes toward the sourth.
【简答题】热电偶的热电动势大小不仅与热端温度有关,而且与冷端温度有关,当冷端温度恒定,通过测量热电动势的大小可以得到( )端的温度。
【简答题】饭店和 、 称为旅游业的三大支柱。
【简答题】A．They lived in large groups. B．They used sand as insulation. C．They kept fires burning constantly. D．They faced their homes toward the south.
【单选题】When I am a boss, I will no longer have to search for this thing. This sentence means ______.
A.
when I have power, I will have happiness
B.
being a boss is more important than feeling happy
C.
when I become a boss, I will never search for happiness
D.
boss and this thing mean the same to boss and I
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