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【单选题】
干绝热直减率总是（）湿绝热直减率。A.
小于
B.
等于
C.
大于
D.
不一定
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皮皮学刷刷变学霸
举一反三
【单选题】Sam buys gasoline and coffee each week. To draw his budget line for gasoline and coffee, Sam needs to know
A.
how much income he has to spend on gasoline and coffee, the price of a litre of gasoline, and the price of a cup of coffee.
B.
only the price of a litre of gasoline and the price of a cup of coffee.
C.
only how much coffee he wants to drink and how much gasoline he needs.
D.
only how much income he has to spend on coffee and gasoline.
E.
what he needs more—gasoline or coffee.
【单选题】随着智慧旅游的快速发展,我国旅行社设立的条件:
A.
不需要有固定的经营场所
B.
不需要有必要的营业设施
C.
有不少于 30 万元的注册资本
D.
只需要有部可以携带的笔记本电脑即可
【简答题】十进制248换算成二进制是( )。
【单选题】Sam buys gasoline and coffee each week. In order to draw his budget line between gasoline and coffee, Sam would have to know
A.
only how much income he has available to spend on gasoline and coffee.
B.
only the prices of one gallon of gasoline and one pound of coffee.
C.
only how much gasoline he wants to buy and how much coffee he wants to drink.
D.
both how much income he has to spend and the prices of one gallon of gasoline and one pound of coffee.
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