what does M， Tr， R mean respectively in thread marks？ - 播寶寶

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題目：what does M， Tr， R mean respectively in thread marks？

騰訊雲服務器2核/2G/3M（61元/首年） 騰訊輕量雲2核/2G/4M（99元/年續費同價）騰訊雲服務器老用戶專享

what does M， Tr， R mean respectively in thread marks？

A.metric thread， trapezodial thread， sealing pipe thread

B.trapezoidal thread， sealing pipe thread，metric thread

C.trapezoidal thread，，metric thread，sealing pipe thread

D.metric thread， trapezoidal thread， sealing pipe thread

正確答案：metric thread， trapezoidal thread， sealing pipe thread

關鍵字：智慧樹

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