[单选] A consulting firm is locating 30 consultants at a client site for a nine-month project. What need does the firm have that can be met by a wireless solution? （）
A . Ensuring secure presentations B . Augmenting an existing network C . Providing a temporary network need D . Having freedom of movement within a network range
水平角就是（）的投影。
12V30Ah（2hr）的含义。
在市场经济时代，企业关注的焦点逐渐由过去关注客户转移到关注产品上来。
胎儿胎盘
当实用堰水头H大于设计水头Hd时，其流量系数m与设计流量系数md的关系是（）。 m=md。 m>md。 m<md。 不能确定。
A consulting firm is locating 30 consultants at a client site for a nine-month project. What need does the firm have that can be met by a wireless solution? （）
