A: in the head.
B: in the tail.
C: in the abdomen,
D: in the wing.
举一反三
- Lightning bugs can blink themselves because of a chemical substance Why do female lightning bugs have brighter and stronger light than male lightning bugs A: Because they have different physical construction. B: Because they are more offensive than male lightning bugs. C: Because they want to frighten their enemies. D: Because they try to attract males to them.
- Lightning bugs can blink themselves because of a chemical substance According to the passage, which of the following about lightning bugs is INCORRECT A: They use blinking signals to communicate. B: They use blinking signals to seek for food. C: They use blinking signals to attract their own species. D: They use blinking signals to frighten and warn enemies.
- With a chemical r______, a new substance can form.
- We<br/>can get a new substance if we _____ a chemical substance with others. A: incorporate B: insert C: obtain D: deprive
- The chemical potential of substance B can be defined as [img=119x47]1803a1a9bb65d2b.png[/img]
内容
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已知广义表LS=（（a,x,y,z）,(b,c)）,运用head和tail函数取出原子c的运算是（ ）。 A: head(head(tail(tail(LS)))) B: head(tail(head(tail(LS)))) C: head(head(head(tail(LS)))) D: tail(tail(head(tail(LS))))
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The body of an insect can be divided into the following parts A: head B: thorax C: abdomen D: body
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已知广义表A（（a，b，c），（d，e，f）），从A中取出原子e的运算是（） A: Tail（Head（A）） B: Head（Tail（A）） C: Head（Tail（Head（Tail（A）））） D: Head（Head（Tail（Tail（A））））
- 3
已知广义表a=((a,b,c)，(d,e,f))，从a中取出原子e的运算是()。 A: tail(head(a)) B: head(tail(a)) C: head(tail(tail(head(a)))) D: head(tail(tail(a)))
- 4
广义表A=(a,b,(c,d),(e,(f,g))),则Head(Tail ( Head (Tail[br][/br](Tail (A))))) 的值为 A: (g) B: (d) C: c D: d<br>解释:选Tail(A)=(b,(c,d),( E: ,( F: , G: ));Tail(Tail(A))=((c,d),(e,(f,g));Head(Tail(Tail(A)))=(c,d);Tail(Head (Tail(Tail<br>A))))=(d); Head(Tail(Head(Tail(Tail(A)))))=d。