题目内容

货物贸易外汇管理改革的主要内容包括()。

A. 改革货物贸易外汇管理方式
B. 对企业实施动态分类管理
C. 调整出口报关流程
D. 简化出口退税凭证

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有色金属指除了钢和生铁以外的其他各种金属及其合金。细分为()、普通黄铜、锡青铜、硅青铜、铍青铜、铝、纯铝等。

A. 纯铜
B. 锡
C. 铅
D. 纯锡

下列的说法()项是错误的。

A. 动火施工人员应经过安全教育
B. 动火施工人员应具备一定的资格等级
C. 动火施工人员应持证上岗
D. 动火施工人员每次动火前应考试合个格

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.
B. Convert the DataContract to a MessageContract and set the ProtectionLevel property to SignAndEncrypt.
Change the data type of CreditCardNumber from string to SecureString.
D. Implement the CreditCardNumber property getter and setter In the setter, run the value of the CreditCardNumber through the MD5CryptoServiceProvider class TransformBlock method.

EFI中的燃油压力调整器功用是()。

A. 维持供油压力不变
B. 维修喷嘴与进气管的压力差不变
C. 维持最高的供油压力
D. 降低供油压力

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