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【单选题】
钩端螺旋体对营养要求较高,人工培养钩端螺旋体常用的培养基是A.
弱培养基
B.
罗氏培养基
C.
Korthof培养基
D.
S-S平板
E.
基础培养基
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A.
500
B.
1000
C.
1500
D.
2000
【简答题】Richard found a job in a big office after he finished college. He liked to use his(1)___ and was good at his job. So he was often paid more than (得到的报酬多于) his workmates and he worked (2) _____ . But s...
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【单选题】新型环保水系灭火器可扑救可燃固体(A类)、可燃油类(B类)、可燃气类(C类)、及 ( ) V以下带电设备的初起火灾。
A.
A、500
B.
B1000
C.
C、 1500
D.
2000
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