在检查和校验SXB型巡测仪表时，切勿任意弯压干簧继电器的______，以免造成______接触电阻增大或损坏其功能。
参考答案：簧片；簧片
— Was the guest's speech interesting?
— Not at all. He was at a _____ and didn't know what to say when others asked him questions. [ ]
A. loss
B. relief
C. goal
D. mercy
充血性脾肿大常见的原因是（）
A.脾结核
B.脾肿瘤
C.肝硬化
D.玻璃样变
E.以上都不是
