膻中穴主治除哪项外各种病症（）.
A.咳嗽气喘
B.胸闷胸痛
C.心悸不安
D.妇女乳少，乳腺炎
E.失眠健忘
参考答案：E
—Hello, Mike. Where is our teacher?
—Oh, he _______ the library. He'll be back in a minute.[ ]
A. has gone to
B. has been to
C. went
D. will go
空调器（冷气机）主要以（）装置降压
A.毛细管
B.膨胀阀
C.贮液器
D.蒸发器
