空气管路装配的密封性；要求空气管路连接处必须均匀地涂上一层（），管路不得歪斜或变形。
A、密封油漆
B、密封胶
C、密封液
D、密封条
参考答案：B
Although she doesn't like to live in the country, _______ , she goes there for a picnic. [ ]
A. once in a while
B. for a while
C. at the moment
D. from now on
耳聋、心胁痛、嗌肿喉痹、汗出是何经病变
A．足厥阴肝经B．足少阳胆经C．手少阳三焦经D．足阳明胃经E．足太阴脾经
