问题
单项选择题
煤气站的生产、输送系统均应按规定设置放散管，且放散管至少应高出厂房顶()m以上并具备防雨和可靠的防倾倒措施。
A．1
B．2
C．3
D．4
答案
参考答案：D
解析：煤气站的生产、输送系统均应按规定设置放散管，且放散管至少应高出厂房顶4m以上并具备防雨和可靠的防倾倒措施。
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煤气站的生产、输送系统均应按规定设置放散管，且放散管至少应高出厂房顶()m以上并具备防雨和可靠的防倾倒措施。
A．1
B．2
C．3
D．4
参考答案：D
解析：煤气站的生产、输送系统均应按规定设置放散管，且放散管至少应高出厂房顶4m以上并具备防雨和可靠的防倾倒措施。
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