激光焊可一次穿透（）以下的金属材料或焊接微型件。 A．10mm B

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问题单项选择题

激光焊可一次穿透（）以下的金属材料或焊接微型件。

A．10mm

B．15mm

C．20mm

D．30mm

答案

参考答案：C

单项选择题

在城市道路规则设计中，行人和自行车高度限界为（）m。

A.2.0

B.2.2

C.3.0

D.3.5

选择题

__________, Gao Xiaosong, a famous musician, was sentenced to 6-month imprisonment–the most severe punishment about drunk driving–on June.1.

A public figure though is he B. A public figure though he is

C. Public figure he is though D. Public figure though he is