【简答题】Why is Australia the flattest and lowest of continents?
【多选题】Why is the livestock industry so developed in Australia?
A.
It is favored by natural conditions.
B.
It has abundant groundwater resources.
C.
It is highly mechanized.
D.
It is due to its intensive grazing.
【单选题】Why is Australia.s New South Wales called the premier state?()
A.
Because it was the first colony established by Britain in 1788.
B.
Because it is the biggest state in Australia.
C.
Because it is the most important state in Australia.
D.
Because it has the largest population in Australia.
【单选题】垄断厂商的需求曲线为Q=100-2P,成本函数为C(Q)=2Q,则它的利润最大化价格是
【单选题】测定一个苹果品种的单果重量,得到具有15个观察值的一个样本资料,计算标准差时其自由度为__
【单选题】给某腹泻患儿第1天补液总量为1500ml,前8h内输入的液量是( )
【简答题】55山东省人文旅游资源丰富,拥有世界级遗产4处,请问它们分别是哪4处?