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【单选题】
对于低速船舶柴油发电机转子多采用 极式;由于其离心力较 ,故转速并不太高。A.
凸/大
B.
凸/大
C.
隐/大
D.
隐/小
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举一反三
【单选题】The boy has been going back home later _____, which worries his parents. [ ]
A.
as usual
B.
than usual
C.
as usually
D.
than usually
【单选题】It was an _______ day today, so he got up much earlier than _______. [ ]
A.
unusual; usual
B.
usual; unusual
C.
unusual; unusual
D.
usual; usual
【简答题】周期表中,处于斜线位置的 B 与 Si 、 Be 与 、 Li 与 性质十分相似,人们习惯上把这种现象称之为 “ 斜线规则 ” 或 “ 对角线规则 ” 。
【简答题】交流接触器符号是()
【单选题】There were fewer people in the shop than usual. There were ______.
A.
as many as usual
B.
not as many as usual
C.
as few as usual
D.
more than usual
【简答题】周期表中，处于斜线位置的B与Si、______、______性质十分相似，人们习惯上把这种现象称之为“斜线规则”或“对角线规则”。
【简答题】Where is snow usual in winter?
【简答题】How long is there the usual guarantee?
【简答题】A.ordinary B.normal C.common D.usual
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