某建筑公司承包一项建筑工程，竣工当月取得工程结算款120万元、工程抢工费8万元、提前竣工奖5万元；当月购买水泥、钢材等工程材料支出46万元、支付员工工资28万元。已知建筑业适用的营业税税率为3%。该公司当月应缴纳的营业税税额为（）万元。

A、120×30%＝3.6

B、（120+8）×3%＝3.84

C、（120+8+5）×3%＝3.99

D、（120+8+5-49-28）×3%＝1.77

A Bluetooth device can be either a master or a slave and any of the devices within a ___30___can be the master. There is only one master and there can be up to ___31___ active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to ___32___.parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to ___33___ mode before it can become active. Within a network, all ___34___ communications are prohibited.

33（）

A. master

B. standby slave

C. parked slave

D. Active slave