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【单选题】
心室肌细胞平台期的主要跨膜离子流是A.
Na+内流、K+外流
B.
Na+内流、Ca2+外流
C.
Ca2+外流、K+内流
D.
Ca2+内流、K+外流
E.
K+内流、Na+外流
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【单选题】ranslate the following sentence into English.“贷方表示资金的来源,而借方表示这笔资金的使用。
A.
Credit entries represent the sources of financing,and the credit entries represent the uses of that financing.
B.
Debit entries represent the sources of financing,and the debit entries represent the uses of that financing.
C.
Credit entries represent the sources of financing,and the debit entries represent the uses of that financing.
D.
None of the above.
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