在80x86宏汇编语言中，为了使程序更加清晰易读，需要为程序代码添加一些注释，注释必须以下列哪种符号开始

When the adjacency list method is used to store a graph, which of the statements is (are) true？ ()

A．None

B．Ⅰ only

C．Ⅱ only

D．Ⅰ and Ⅱ

When the adjacency matrix method is used to store a graph, which of the statements is (are) true？ ()

A．Ⅰ and Ⅱ

B．Ⅰ only

C．Ⅱ only

D．neither

A. An Adjacency is formed.

B. No IS-IS PDUs are sent.

C. An Adjacency does not form.

D. An Adjacency forms but traffic is not forwarded.

A．1 and 2 only

B．2 and 3 only

C．2,3 and 4 only

D．ALL

When the adjacency matrix method is used to store a graph, which of the statements is (are) true？ ()

Ⅰ．the space required depends on the number of vertices

Ⅱ．the apace required depends on the number of edges

A．None

B．Ⅰ only

C．Ⅱ only

D．Ⅰ and Ⅱ

A．AFI

B．Area

C．System id

D．N-Selector

A. Level 1 only

B. Level 2 only

C. Level 1 and Level 2

D. Level 3 only

A．Level 2 - 3

B． Level 1 - 2

C． Level 2

D． Level 0

E． Level 3

F． Level 1

When the adjacency list method is used to store a graph，Which of the statements is(are) true？()

Ⅰ．The space required depends on the number of vertices

Ⅱ．The space required depends on the number of edges

A．ⅠandⅡ

B．Ⅰ only

C．Ⅱonly

D．None