对于负压系统的玻璃液面计来说,当玻璃管内有气泡出现时,说明玻璃液面计底部有漏点。()
参考答案:对
The days when he was_________ his best is already a thing of the past.
A.in
B.on
C.at
D.with
半夏的适应证包括()
A.痈疽肿毒、毒蛇咬伤
B.瘿瘤、痰核
C.呕吐
D.寒痰证、湿痰证
E.心下痞、结胸、梅核气