党中央要求公安机关和人民警察在各项执法工作中，要把人民群众的呼声作为第一信号。()
A. 正确
B. 错误
A．It is not as bad as it used to be.B．Americans do not want to give up any more sleep.
A. It is not as bad as it used to be.
B. Americans do not want to give up any more sleep.
C. Americans guarantee to change the sleeping habits.
D. Americans want to know just how bad it is to their health.
某科研单位工程师为某施工企业提供设计服务，双方商定，设计完成后由施工企业支付给工程师55000元劳务费，个人所得税由施工企业代付。不考虑其他税费的情况下，施工企业代付的个人所得税为()元。
A. 11200
B. 17710.5
C. 10563.2
D. 15588.2
折现率为10%，则该写字楼投资项目的收益现值为()元。
A. 536.48
B. 537.66
C. 538.55
D. 539.66
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