属于病理性萎缩的有（）。

A.更年期后性腺萎缩

B.恶病质时的全身性萎缩

C.动脉硬化性脑萎缩

D.成年后胸腺萎缩

E.长期饥饿时的肌肉萎缩

On a hydrocarbon flammability chart the line which extends from 0% to 21.8% oxygen，lying tangent to the flammability range，is called the（）.

A.minimum oxygen content line

B.critical displacement line

C.critical dilution line

D.upper threshold limit