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【单选题】
二度 I 型房室传导阻滞 ( 现象 ) 的心电图特征为A.
心房和心室独立 ,P 波与 QRS 波群完全脱离关系 ,P-P 间隔各自相等，心室率慢于心房率
B.
P-R间期小于 0.12 秒 , 无 QRS 波群脱落
C.
P-R间期固定不变 ( 正常或延长 ) 每隔 1 、 2 个或 3 个 P 波后有一个 QRS 波群脱落
D.
P-R间期大于 0.20 秒 , 无 QRS 波群脱落
E.
PR间期逐渐延长 , 直至 P 波后 QRS 波群脱落 , 之后 P-R 间期又恢复以前时限 , 如此周而复始
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【简答题】What does the poet express in the poem?
【单选题】When the narrator is beaten by his mother, how does the poet comfort him?
A.
He brings me to the wilderness to look at the stars
B.
He holds him in his arms and comforts him
C.
He invites him over to his house and makes him herbal tea
D.
He brings him to the race-course and together they gaze into the starry night sky
【单选题】在图样中除了物体形状的图形外,对字体也作了统一规定,其中正确的是())1字体高度代表字体号数2汉字应写成长仿宋体3字母和数字可写成直体和斜体4在同一图样土,允许用两种型式的字体
A.
①⑧
B.
①②
C.
①②③④
D.
①②③
【单选题】Why does the author mention 'poet' in the last paragraph?
A.
A poet is an example of good language users.
B.
A poet is full of great thoughts and feelings.
C.
A poet tells of the glad and sad events of his past.
D.
A poet knows more sounds and words than others.
【简答题】What does the poet think the world will end in?
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