机体阳气不足主要与下列哪两脏的关系最密切
A．脾肾B．心脾C．心肾D．肝肾E．肺脾
参考答案：A
Three students were chosen to________the experiment.[ ]
A. take out
B. look out
C. carry out
D. watch out
涡桨収动机在启动时混合气未着火的现象属于？（）
A.热启动
B.悬挂启动
C.湿启动
