中低压玻璃钢管道试压，若以水为介质，肉眼观察所有接口及管体本身无裂纹、（）为合格。
参考答案：无渗漏
He __________ his position as the manager of the department because he was offered a better job.[ ]
A．regained
B．repeated
C．represented
D．resigned
公命，我勿敢言。
