简述古典时期古希腊民主黄金时代的特点。
安装预制楼梯应综合考虑塔吊主体结构施工间隙，一般（）层楼梯构件集中吊装。 ["A.2-4 ","B.2-5 ","C.3-5 ","D.3-6"]
投资基金所面临的风险有（） ["流动性风险","购买力风险","财务风险和管理风险","市场风险和利率风险"]
You are creating a Windows Communication Foundation (WCF) service to process orders.The data contract for the order is defined as follows:[DataContract]public class Order{ [DataMember] public string CardHolderName { get; set; } [DataMember] public string CreditCardNumber { get; set; }}You have the following requirements: Enable the transmission of the contents of Order from the clients to the service. Ensure that the contents of CreditCardNumber are not sent across the network in clear text. Ensure that the contents of CreditCardNumber are accessible by the service to process the order.You need to implement the service to meet these requirements. What should you do?（） [" Add a DataProtectionPermission attribute to the CreditCardNumber property and set the ProtectData property to true."," Convert the DataContract to a MessageContract and set the ProtectionLevel property to SignAndEncrypt."," Change the data type of CreditCardNumber from string to SecureString."," Implement the CreditCardNumber property getter and setter In the setter, run the value of the CreditCardNumber through the MD5CryptoServiceProvider class TransformBlock method."]
从安全生产的角度考虑，签订劳动合同时应注意哪些事项？
（）和（）是盛行于17世纪至19世纪初欧洲的文学创作方法。
