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【多选题】
下列关于网络商务信息分级的的说法错误的是（）A.
收取较低费用的信息是属于知识、经济类的信息，收费采用成本加利润的资费标准，是信息服务商的主要服务范围。
B.
免费商务信息，这些信息主要是社会公益性的信息。
C.
收取标准信息费的信息是一般性的普通类信息。
D.
优质优价的信息，这类信息是有极高使用价值的专用信息，如重要的市场走向分析、网络畅销商品的情况调查、新产品新技术信息、专利技术以及其它独特的专门性的信息等，是信息库中成本费用最高的一类信息，可为用户提供更深层次的服务。
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举一反三
【单选题】What do the content of Instruction register specify?
A.
Operand of the instruction being executed
B.
Op-code of the instruction being executed
C.
Op-code of the instruction to be executed next
D.
Operand of the instruction to be executed next
【单选题】In the following Java statement what value is stored in the variable name? String name = "John Doe";
A.
John Doe
B.
The memory address where "John Doe" is located
C.
name
D.
The memory address where name is located
【单选题】what does The label in the assembly instruction refer to
A.
Variable address in memory
B.
Instruction address
C.
What to do
D.
Object of the instruction
【单选题】what type of instruction is the instruction jal ()
A.
Type I
B.
Type J
C.
Type R
D.
Not sure
【单选题】What is a macro? It is ______.
A.
a file
B.
a program
C.
a language
D.
an instruction
【单选题】What is wrong with the following statement about the instruction system
A.
An instruction system is a set of instructions that a machine's hardware can execute
B.
Any program must be converted to machine language before it can be run
C.
The instruction system is the interface of computer software and hardware
D.
The instruction system is independent of the machine language
【单选题】What ________ the weather ________? [ ]
A.
is; look like
B.
doe; like
C.
is; like
D.
are; like
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