Feedback refers to any information which provides a report on the result of communication which takes place not only between the listener and the speaker.()
A. 正确
B. 错误
下面哪条动脉闭塞时出现眼动脉血倒流:()
A. 基底动脉
B. 椎动脉
C. 颈外动脉
D. 颈内动脉
大脑底部前发自颈内动脉的唯一的分支是以下哪条动脉:()
A. 基底动脉
B. 椎动脉
C. 颞动脉
D. 眼动脉
深海渔场:渔场处于外海渔场外侧,水深一般在()的深海。