臁疮好发于( )
A．四肢末梢B．小腿下部C．骶尾部D．髋部E．脊背部
参考答案：B
Digitalis is a drug which is prepared from the seeds and leafs of a plant with the same name and is used as a cardiac stimulant.
蒸汽参数对锅炉整体布置有何影响？
