β-受体阻断剂普萘洛尔的临床用途有抗心律失常、_____________、抗高血压和抗甲亢
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
以下有关老年人应用β受体阻断药普萘洛尔的说法,不正确的是( )。
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