多项选择题

中国共产党赢得人民群众的信任主要靠哪三个优秀品质

A．人民性
B．崇高信仰
C．忠诚性
D．先进性

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单项选择题

Which of the following is INCORRECT concerning diastolic depolarization at the SA node? ()

A．It results from a decrease in IK.
B．Results from the activation of If carried mainly by Na ions.
C．Its rate is decreased by sympathetic stimulation.
D．Activating IKACh decreases its rate.
E．Its rate is decreased by decreasing ICa

位于头部的内分泌器官是（）

答案： A.甲状腺
B.肾上腺
C.胸腺
D.垂体
E.胰岛
正确答案：垂体