问题
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明沟排水坡度为()。A.0.1%~0.2%B.0.3%~0.5%C.3.0%~5.0%D.4.0%~8.0%
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1,6,5,7,2,8,6,9,() A.1 B.2 C.3 D.4
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球墨铸铁的含碳量为()。A.2.2%~2.8%B.2.9%~3.5%C.3.6%~3.9%D.4.0%~4.3%
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÷≈∠≡⊙≠ =≤÷∠∵≈∴⊥⊙∥ ∠⌒÷⊙≈≌%A.0 B.2 C.3 D.4
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洗必泰漱口液使用浓度为0.12%和A.0.1%.B.0.2%.C.0.3%.D.0.4%.E.0.5%.
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低钾血症时静脉输液补钾的浓度一般不超过A.0.1%B.0.2%C.0.3%D.0.4%E.0.5%