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发布时间: | 浏览:4077 | 来源: ???

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A?1mm-2mm,0.4M B?1.6mm-3mm,0.6M

C?1.5mm-2.0mm,0.6M D?2mm-3mm,0.8M

2??????????????????????????______?( B )(1?)

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8????????______??????( B )(1?)

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A?0.2 B?0.4 C?0.8 D?1

10????????????_____???????______?????????????______??( C )(1?)

A?30?150mm-300mm,1-1.5 B?30?150mm-300mm?1-1.2

C?45?130mm-200mm?1-2 D?20?160mm-500mm,3-5

11?????????????______???( B )(1?)

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12??????????????????????????______?( A )(1?)

A?GB18581-2009 B?GB18582-2009 C?GBIT9757-2001

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19???????????????????_____?( C )(1?)

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20?????????????????______???( A )(1?)

A?8%~12% B?9%~15% C?6%~20% D?7%~16%

21??????????_____?( D ) (1?)

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22????????????????????????????_____???????______??????( D )(1?)

A??????30-60 B??????10-50

C??????15-30 D??????20-40

23???????????______???????????______???( A )(1?)

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24????????????????______( ABC )(????)(2?)

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26??????????????______?(ABC )(????)(1?)

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32???????????????______ ( ABC )(????)(2?)

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33???????????(ABC)(????)(2?)

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34? ????????????????(ABCD)(????)(1?)

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35???????????????( ABCD )(????)(1?)

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36???????????????(ABC)(????)(1?)

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37????????????????????????????????????______?(ABCD)(????)(2?)

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38??????????????????(ABCD)(????)(1?)

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39?????????????______????????????????????????(ABC) (1?)

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40???????????????(AB)(1?)

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