问题
单项选择题
裂纹判断有疑问的摇枕、侧架和一体式构架须除锈对存疑部位进行（）
A.磁粉探伤
B.着色检验
C.射线探伤
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
裂纹判断有疑问的摇枕、侧架和一体式构架须除锈对存疑部位进行（）
A.磁粉探伤
B.着色检验
C.射线探伤
参考答案：A
下表中公式能反映串、并联电路中电流、电压及电阻的规律，其中适用于串联电路的有______．（填序号）
| ①I=I1+I2 | ②U=U1+U2 | ③R=R1+R2 | ||||||
| ④I=I1=I2 | ⑤U=U1=U2 | ⑥
|
从所给的句子中选择恰当的句子完成下面对话（有两项是多余的）（5分） (Lucy and Bob are talking about School Science Show. “L ”is for Lucy. “B ”is for Bo B. ) B: Lucy, are you going to the School Science Show? L:小题1:When does it start? B: 1 saw the poster yesterday.小题2:It will last two days. L: Oh, July 5th and 6th.小题3:_______ B: Yes. And this time it will be open from 10:00 a.m. to 6: 00 p. m.. L: That sounds good. It will give more people the chance to enjoy it.小题4:______ B: Only $ 2 for students, but adults should pay $10. L~ Great! It's much better than before. B: The poster also says there are many new inventions to watch and try this time. L:小题5:I won't miss it!
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