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【单选题】
以下关于数据类型转换规则的描述,错误的是?A.
有语句char c='c', d='d'; 那么在计算表达式c+d时，编译器会自动将c和d都转换为int型，且运算结果也是int型
B.
有语句int a=34; long b=45; 那么表达式a+b的结果是long型
C.
有语句char c='R'; short d=127; 那么表达式c+d的结果是int型
D.
有语句float f=3., e=.3; 那么表达式f+e的结果是double型
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反馈参考答案：
举一反三
【单选题】Insurance against risks at an acceptable price can only be realized when the amount of people facing the similar risk is quite large.
A.
Y
B.
N
C.
NG
【单选题】_____ occurs when the only two firms in an industry agree to fix the price at a given level.
A.
Collusion
B.
The ability to satisfy demand
C.
Price extortion
D.
Price leadership
【简答题】人类社会的三大资源包括:物质、能源及()。
【单选题】Figure 4-1 Refer to Figure 4-2. If Consumer A and Consumer B are the only consumers in the market, then the market quantity demanded when the price is $10 is
A.
0 units.
B.
4 units.
C.
10 units.
D.
12 units.
【单选题】_____ occurs when the only two firms in an industry openly agree to fix the price at a given level.
A.
Overt collusion
B.
Price leadership
C.
Contestability
D.
Tacit collusion
【单选题】When a tax is imposed on a good or service, buyers respond only to the price that ________ the tax, and sellers respond to the price that ________ the tax.
A.
excludes; includes
B.
includes; excludes
C.
excludes; excludes
D.
includes; includes
【单选题】The following statements have been made about the demand for products.(1)Demand for a product will increase when the price of a substitute product falls.(2)Demand for a product will fall when the pric...
A.
1 only
B.
2 only
C.
Neither 1 nor 5
D.
Both 1 and 2
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