肺痈的治疗原则是
A．清热解毒，活血通络B．清热解毒，化瘀排脓C．清热解毒，肃肺化痰D．清热解毒，凉血止血E．清热解毒，宣肺平喘
参考答案：B
-"Do you know ________ ? I'm going to see him. "
-"Sorry, I don't know. "[ ]
A. where does Mr. Li live
B. where did Mr. Li live
C. where Mr. Li lives
D. where Mr. Li lived
带式逆止器的输送机在何种情况下制动才安全可靠？又在何种情况下应设置制动装置？
