单项选择题
A.1.5~2.0Bar B.1.2~1.8Bar C.1.3~1.9Bar D.大于1.5Bar
A.60.0~63.0 B.61.0~63.0 C.60.0~62.0 D.62.0~63.0
A.4 B.5 C.3 D.6