根据成本随着服务量变化而变化的特点可将成本分为()。
A.固定成本与变动成本
B.固定成本、变动成本与混合成本
C.直接成本与间接成本
D.可控成本与不可控成本
参考答案:B
根据汉语提示完成下面的句子(每空一词)。
1. If you want to catch that train, you’d better _______ _______ (出发) for the station immediately.
2. When she _______ _______ _______ (往……外看) the window, she saw her father was still there. 3. I’ll do it, _______ _______ (即使) it takes me all the afternoon.
4. “Please take my seat, grandpa. I’m ___ _______ (下车) at the next stop,” Tom said to the old man.
5. —Where does the Earth’s energy _______ _______ (来自)?
—Most of it is from the Sun.
()对接收的信号进行解调和译码然后送到后台软件系统处理。
A、射频卡
B、读写器
C、天线
D、中间件