【判断题】装配图中,同一零件在各视图上的剖面线方向可以相反,但是间隔必须一致
【单选题】在装配图的规定画法中,同一零件在各视图 上的剖面线方向和间隔必须
【单选题】-–Where is your sister? --She _________the library
【单选题】Your sister has made an ______ for you to see the dentist at 3 this afternoon.
【判断题】在装配图中,同一个零件在各视图上的剖面线方向和间隔必须一致。
【单选题】—Has your sister visited Disneyland _____? —Yes, she has visited it ________.
【单选题】Has your sister returned____
B.
s, he ____for more than half an hour.
F.
to home; has been back
【单选题】装配图中同一个零件在各视图上的剖面线方向和间隔应( )。
【单选题】-Look, your sister is playing the piano over there. -She ______ be my sister. She has gone to America.