正确答案: B

氮气

题目：为了经久耐用，在灯泡中可填充的气体是

解析：B

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举一反三的答案和解析：

[单选题]People who like dancing can come at____________.

7:45 p.m.

[单选题]How long did he spend on his way to the place for his performance?

four hours and three quarters. D． One hour and a quarter.

[单选题]

shining