阳虚的病理改变是什么?()
A.寒实
B.虚寒
C.实热
D.虚热
参考答案:B
Lingling is a . She works in a hospital.
A.farmer
B.teacher
C.worker
D.nurse
带钳口的熔断器,其熔丝管应紧密地插入()内。