火检法（指电缆潮气）
参考答案：
用火燃烧撕下的绝缘纸条，如有噼噼声或出现白泡沫，表明绝缘受潮。
No one in the department but Tom and I ______ that the director is going to resign.
A．knows
B．know
C．have known
D．am to know
噎膈痰气交阻证宜选( )
A．启膈散加减B．通幽汤加减C．沙参麦冬汤加减D．补中益气汤加减E．补气运脾汤加减
