严禁( )的机构和人员办理工程项目业务。
A．临时设置
B．未经许可
C．未经授权
D．代办、代理
参考答案：C
单项选择
Sam came to school as_____as Tom. They were both_____for school.[ ]
A. late; late
B. later; later
C. late; later
D. later; late
当中药接触不明农药时，一般可测定
A．总有机氯量B．总有机磷量C．气相色谱检查可能相关的农药D．A+B+CE．A+B
