如果一个项目的时长为1年,那么每个活动的时长最好为()。
若方程组有无穷多解,则λ=()。
名词解释:户外媒体广告
Complete each of the following sentences with a (compound) word derived from the one(s) given in brackets.
It is believed that genius requires 99 percent of hard work and only one percent of ( ). (intelligent)