【单选题】在原子荧光分光光度计中,光源、原子化器和分光系统是排成()
【单选题】According to the passage, what is common to relational terms and deictic expressions?
A.
They both require a considerable exercise of intelligence.
B.
They both involve the concept of size in referring to objects.
C.
They can both be used to test the intelligence of children.
D.
They pose difficulties for young children in acquisition of language.
【单选题】在原子荧光分光光度计中,光源、原子化器和分光系统是排成( )。
【简答题】在原子荧光光度计 中, ___________ 和检测器 呈直角放置,其目的是为了避免 ___________对荧光测定的干扰 。
【单选题】What does relational argumentation concern?
A.
It concerns the nature and definition of things.
B.
It concern the relationship between things.
C.
It concerns the value or worth of things.
【单选题】What are the relationships that the relational database is named for?
A.
Relationships between entities
B.
Relationships between rows and columns
C.
Relationships between databases
D.
Relationships between fields and records