在螺纹紧固件的装配图中,相邻两零件接触时,接触表面只画一条粗实线,不接触时,应清楚地画出两条粗实线。
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Hurry up! Everybody _____________ (wait) for you.
Look! It _____________ (rain)hard. We’ll get wet if we _____________ (go) out.
— Where _____________ their father _____________ (work)? — He _____________ (work) on a farm. But now he _____________ (not work). He _____________ (watch)TV at home.
— Listen! Who _____________ (read) English? — Han Meimei is. She often _____________ (read) English in the evening.