呼吸深快见于（）
A.呼吸肌麻痹
B.过度紧张
C.严重鼓肠
D.大量腹水
E.肥胖
参考答案：B
A good ad often uses words ________ people attach positive meanings .
A．in which
B．to which
C．which
D．that
魏氏组织的金相特征及形成条件是什么？在低碳和高碳钢中有何区别？
