题目内容

蒲肯野纤维与心室肌纤维相连,将冲动快速传递到心室各处,引发心室肌的同步收缩。

A. 对
B. 错

查看答案

搜索结果不匹配？点我反馈

更多问题

It was 300 miles______ to Liverpool.

A. by train
B. by car
C. by air

The youth hostel was in______.

A. an old house
B. an old warehouse
C. an old playground

______ was very helpful.

A. The stranger
B. The policeman
C. The man in the tourist information office

Max could see______on the map.

A. the station
B. the youth hostel
C. the tourist information office