题目内容

射吸式焊炬适用于()

A. 低压及中压乙炔气
B. 低压、中压及高压乙炔气
C. 高压及中压乙炔气

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小孔型焊接保护气体流量一般在()

A. 5L/min
B. 10Lmin
C. 15L/min

How to address your manager Andrew Louis?

A. Mr. Louis
B. Mr. Andrew
C. Andy

How to address your teacher Jim Green?

A. Mr. Green
B. Jim
C. Teacher Jim

How to address your best friend Jenny Louis?

A. Mrs. Louis
B. Jenny Louis
C. Jenny

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