题目内容

QR code ordering is popular in China.

A. 对
B. 错

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A. That's itB. presentC. Is this hers tooD. a souvenirE. Good ideaF. T-shirtG. belongsMike: Huh. What about this? (1) ?Roberto: Oh that? That (2) to my Dad. It's (3) from his New York visit, but he forgot it. Do you think I should get him another (4) ?Mike: Well, that already belongs to him. Hey you should get him a New York (5) or maybe a Yankees cap?Roberto: (6). I can get that at the airport. (7) .

锻造实习中使用的空气锤其型号是，此型号的含义是____。

锻件的实际尺寸与其____________________之间所允许的偏差叫锻件的公差。

压力加工的方法，除锻造和板料冲压外，还有、、和等方式。