调车领导人编制调车作业计划时，必须注明作业方式，对有计划的原路返回、穿越正线、分路不良、特殊限制车辆（）在《调车作业通知单》内注明。
A. 可不必
B. 必须
C. 根据需要
D. 布置清楚后无需
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以下（）急救措施对解救休克病人有作用。
A. 掐“人中”穴（位）
B. 人工呼吸
C. 心脏按摩
Which of the following are characteristics of named access lists?（）
A. Individual statements in a named access list may be deleted.
B. They require a numbered range from 1000 to 1099.
C. When created, they must be specified as standard or extended.
D. They are created with the ip access-list command.
E. The entire access list must be deleted before editing.
F. They are applied with the ip name-group command.
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