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【多选题】
以下哪些是β受体阻断药的作用A.
改善心功能与血流动力学
B.
抑制交感神经过度兴奋减慢心率
C.
抑制RAAS的激活
D.
上调β受体
E.
降低心脏耗氧量
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【单选题】1935年，中国共产党发表( )，呼吁全国人民团结起来，停止内战，一致抗日;号召全民总动员，为抗日救国的神圣事业而奋斗。
A.
《中央关于一、四方面军会合后的政治形势与任务的决议》;
B.
《八一宣言》;
C.
《关于战略方针的决定》
【简答题】Question 8 Circle TWO letters A-G. Which TWO of the following items must people take with them? [A] sandals [B] old clothes [C] pullover [D] shirt with long sleeves [E] soft drinks [F] hat
【单选题】1935年8月,中国共产党发表了 ——,呼吁停止内战,一致抗日。
A.
《抗日救国宣言》
B.
《抗战建国纲领》
C.
《抗日救国十大纲领》
D.
《为抗日救国告全国同胞书》
【单选题】Which of the following is not true of inflation?______.
A.
There are at least two theories generally accepted as to the cause of inflation: Demand-Pull Inflation and Cost-Push Inflation.
B.
Inflation always has negative effects on economy.
C.
Stagflation is the combination of high unemployment and economic stagnation with inflation.
D.
The lack of inflation may be an indication that the economy is weakening.
【判断题】Let G be a nontrivial (with at least two vertices) simple graph. There must be two vertices whose degrees are equal in G.
A.
正确
B.
错误
【简答题】Question 9 Circle TWO letters A-G. Which TWO accommodation options mentioned are near the paragliding school? [A] camping [B] youth hostel [C] family [D] backpackers' inn [E] caravan park [F] bed and ...
【单选题】1935年中国共产党发表《八一宣言》,呼吁各界同胞、党派和军队捐弃前嫌,抵御外侮,是因为:()
A.
党修改了民主革命的纲领
B.
中国需倾全国力量抗日救国
C.
抗日战争全面爆发
D.
党重新认识了工农武装割据思想
【简答题】If G is a graph with at least two vertices, prove that G must contain two or more vertices of the same degree.
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