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零件的热加工工艺结构有哪些?A.
铸造圆角
B.
起模斜度
C.
壁厚均匀
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【简答题】读一读，给问句选择最佳答语。 ( ) 1. What are you doing? ( ) 2. Can you hear the music? ( ) 3. Do you like my gifts? ( ) 4. What's this? ( ) 5. Why don't you go to school? ( ) 6. What's your ...
【简答题】学前儿童语言教育的目标可以分为哪几个层次?
【简答题】完形填空。 Listen. Do you hear that?Whatever it is - the hum (嗡嗡声) of a computer,the birds outside, a car going by ―you can hear it and 1 which direction it's coming from thanks to your ears. Hearing is t...
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