336钩体病的传染原是A．病人B．病人及带菌者C．猪D．鼠与猪E．鼠

充电器的作用是什么？

In a public-key cryptosystem, (71) encrypted with the public key can only be deciphered with the private key from the same (72) . Conversely, (71) encrypted with the private key can be decrypted only with the public key. Users can make their public keys (73) available or place them at a key distribution center or others to access. However, the private key must be (74) safe. In public-key systems there’s no (75) to find a safe channel for communicating a shared secret key.

A. more B. necessary C. need D. space

长沙市妇幼保健院始建于

如果公安局要吊销张永平工厂的消防安全合格许可证，那么张永平可否要求举行听证为什么

建设工程勘察、设计注册职业人员和其他专业技术人员未受聘于一个建设工程勘察、设计单位或者同时受聘于两个以上建设工程勘察、设计单位从事建设工程勘察、设计活动的，责令停止违法行为没收违法所得并处以罚款所罚金额为违法所得______。

A．5倍以下罚款
B．3倍以上罚款
C．3倍以上5倍以下罚款
D．5倍以上罚款