autonomic nervous system

[名词解释] Parasympathetic nervous system

[名词解释] Sympathetic nervous system

[名词解释] 神经调节（nervous regulation）

[单选题]B．eing so nervous, He could ________ give helm ordersA．hardlyB．cannotC．doesn’tD．no

[单选题]Student: I'm nervous.Teacher:______. Betty, you'll finish it quickly.

[单选题]A． segregated ballast system is a system whereA．all ballast is processed through the oily water separatorB．ballast is taken on and discharged through a separate main deckC．ballast and cargo tanks are separated by cofferdamsD．all ballast lines, tanks,

[单选题]A ( ) is a feature of the system or a description of something the system i

[单选题]A ( ) is a feature of the system or adescription of something the system is

[单选题]Which of the following system adopts a three-tier classification system:A.R

[名词解释] Haversian system