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【毎日のテーマ】【建設版20160820】

2016-08-20View Original

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この投稿は最後にhesonchang214によって2016年8月20日17時15分に編集されました。参加報酬:2財富。正解者への報酬:9財富 レンガ壁の水平な目地におけるモルタルの充填度は、少なくとも()以上でなければならない。 A、90% B、80% C、75% D、70% 正解:B
Reply #22016-08-20
B、レンガ壁の水平目地のモルタルの充填度は、少なくとも(B、80%)以上でなければならない。

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