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【单选题】
关于心肌细胞收缩性描述错误的是A.
同步收缩：全或无收缩
B.
不发生强制收缩
C.
对细胞外钙离子的依赖性：肌质网不如骨骼肌发达
D.
影响心肌细胞收缩的因素有前负荷、后负荷、心肌收缩能力、胞内钙离子浓度
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参考解析：
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皮皮学刷刷变学霸
举一反三
【简答题】_____ 必须包括传达信息的建议方法或技术。 ( 140703 班 杨代洪) A(n) _____ must include suggested methods ortechnologies for conveying the information.
【单选题】Which of the following statements does NOT give a correct description of the man in the short story?
A.
The man carries a gun and a heavy sack full of dead birds.
B.
The man is a handsome young ornithologist.
C.
The man is eager to collect a white heron.
D.
Throughout the story, the man appears to be assertive, aggressive, and arrogant.
【单选题】Which season does the speaker talk about according to dialogue 1?
A.
spring
B.
summer
C.
fall
D.
winter
【简答题】听对话和问题，选择适当的选项。 1. Which season does the man like best? [ ] A. B. C. 2. What does the man want to do? [ ] A. B. C.
【简答题】二战后旅游的学术研究中心转向( ),并且在研究路径上表现出明显的多学科渗透的学术特点。
【单选题】The fact (which) a good teacher has some of (the gifts) of a good actor (does not mean) that he will indeed be able to (act well) on the stage.
A.
which
B.
the gifts
C.
does not mean
D.
act well
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