A.均不计入营业额B.材料差价计入营业额,提前竣工奖不计入营业额C.材料差价不计入营业额,提前竣工奖计入营业额D.均应计入营业额
单项选择题The first paragraph mainly talks about ().
A.the problems caused by river waterB.the necessity to irrigate the fieldC.the water shortage in some countriesD.the canals carrying water to fields
单项选择题According to these two letters, which of the following statements is true?()
A.Confused was glad to visit his roommate's house.B.Confused was a little worried because he had no money for presents.C.Confused should arrive at his roommate's house as late as possible.D.Confused should eat the food up even if he didn't like the food.
未分类题A.Leave for home.B.Check the language lab.C.Buy a new locks.D.Show the man where the lab is.
未分类题A.It has numerous traits in common with the spotted owl.B.Its population is increasing.C.It may not survive without special efforts of conservationists.D.Its role in the chain of evolution has not yet been examined.
单项选择题假如两种物品之间的交叉弹性为-3,那么,第一种物品涨价,会使: A.第二种物品的需求曲线右移 B.第二种物品的需求曲线左移 C.第二种物品的需求量沿着该物品的需求曲线下移 D.对第二种物品的需求曲线的影响不确定