What’s on the speaker’s left?
AirForceAnts
B. Jungle Flying Train
C. Mayan Kingdom
D. Energy Collector
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Whatisthe“EnergyCollector”intheconversation?
A. aspaceship
B. aticketoffice
C. Ferriswheel
D. atrain
Whatdotheywanttotryfirst?
AirForceAnts
B. JungleFlyingTrain
C. MayanKingdom
D. EnergyCollector
当细胞外钙浓度增高时,不会发生的是:
A. 心肌的兴奋性升高
B. 心肌的收缩力增强
C. 心肌的传导性降低
D. 窦房结细胞0期去极化速率加快
E. 心室肌动作电位平台期缩短,复极化加速
窦房结兴奋快速传播到房室交界处通过:
A. 心房内优势传导通路
B. 心房肌
C. 房室束
D. 浦肯野纤维
E. 左右束支