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A??????? B?????????

C??????? D?????????

2?????????????______?( C )

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A??????????? B???????????

C??????????? D???????????

4?????2017????????????????______?(B)

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5?????2018???????????????????????______?( B )

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6?????????______???“???”?( B )

A?8?8? B?7?8? C?9?8? D?10?8?

7??????????____??????????___PA?( C )

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

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

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

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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

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18??????????????????????????______?( A )

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38?????????????????????????????_____?(ABC)(????)

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49?????2018????????????????????????______???(ABC)(????)

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52?“???”????????????????????????????______?(ABCD)(????)

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53?????????????????????????______?(ABCD)(????)

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