问题
单项选择题
使用脆性材料时应主要考虑（）
A．应力
B．屈服极限
C．冲击应力
D．强度极限
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
使用脆性材料时应主要考虑（）
A．应力
B．屈服极限
C．冲击应力
D．强度极限
参考答案：D
| 补全对话。 | |
| (A=Salesgirl B=Mrs Green) A: Good afternoon! Can I help you? B: Yes, please.(1)___________ A: We have many popular kinds,like Motorola,Nokia and so on. B. I prefer the things made in China.(2)___________ A: Yes, TCL is also popular.What about this one? (3) B:Well, I don't want the newest.I'd like a practical(实用的)one. A:This one looks nice and works well. B: (4) ___________ A:1,350 yuan. B: (5)___________ But I'll take it.
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