食用农产品生产者使用农药、肥料、生长调节剂、兽药、饲料和饲料添加剂等农业投入品,应当依照国家有关规定和().
A. 食品安全企业标准
B. 食品安全信用记录
C. 食品安全风险监测数据
D. 食品安全标准
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电子化支局营业操作系统中,营业员封发邮件处理时,在“2邮件封发/3封发处理”界面,未封邮件在界面的哪个位置?()
A. 上框
B. 下框
C. 左框
D. 右框
You are developing a Windows Communication Foundation (WCF) service. You need to enable security auditing for all events. What should you do?()
A. Set the serviceAuthorizationAuditLevel setting to Success and the messageAuthenticationAuditLevel setting to Success.
B. Set the messageAuthenticationAuditLevel setting to Success and the auditLogLocation setting to Application.
C. Set the serviceAuthorizationAuditLevel setting to SuccessAndFailure and the messageAuthenticationAuditLevel setting to SuccessAndFailure.
D. Set the messageAuthenticationAuditLevel setting to SuccessAndFailure and the auditLogLocation setting to Security.
下列关于黄土高原成因的学说,得到广泛支持的是()
A. 水成说
B. 风成说
C. 风水相说
D. 风水雨相说
制作声接收器最好的材料是()
A. 石英
B. 硫酸锂
C. 钛酸钡
D. 偏铌酸铅