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能形成芽胞的是
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数据加密标准(DES)是一种分组密码，将明文分成大小 (43) 位的块进行加密，密钥长度为 (44) 位。
Good morning, Ladies and Gentlemen:Welcome aboard Dragonair Airlines Flight 121 Hong Kong to Paris. Our flight will take about three hours. We will be flying at an altitude of 3473 meters and the average speed is 903 kilometers per hour.In order to ensure the normal operation of aircraft navigation and communication systems, mobile phones, toys and other electronic devices throughout the flight and the laptop computers are not allowed to use during take-off and landing.We will take off immediately, please be seated, fasten your seat belt, and make sure your seat back is straight up, your tray table is closed and your carry-on items are securely stowed in the over-head bin or under the seat in front of you. This is a non-smoking flight; please do not smoke on board.The chief purser Adam Smith with all your crew members will be sincerely at your service. We hope you enjoy the flight! Thank you!This announcement is broadcast before the plane is to (1) .The flight is from (2) to (3) .Passengers are allowed to use laptop computers except when the plane is to take off and (4) .Throughout the flight, (5) and the use of electronic devices are not permitted. 1（）
某厂为了提高质量检验的效率和效果，合理地配置检验资源，对本厂的产品质量检验系统、质量检验等各方面进行了更为规范的规划和分类。 某厂质量检验实行“三检”制，“三检”即是( )的简称。
为预防人群布鲁斯菌病，对暴露人群采用104M活菌苗40亿皮下注射。接种后第9天受免疫的部分人员中出现了发热、乏力、多汗、关节疼痛及睾丸肿大等临床表现。 导致该现象的原因是
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