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【单选题】
下列关于普萘洛尔的叙述，错误的是( )A.
对稳定性、变异型、不稳定性心绞痛都有良好疗效
B.
可影响脂肪和糖类代谢
C.
生物利用度个体差异大。宜从小剂量开始，以后逐渐增量
D.
阻断心脏J3受体而使心率减慢，心肌收缩力降低，心肌耗氧量降低
E.
与硝酸酯类药物合用可增强疗效，互补不良反应
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皮皮学刷刷变学霸
举一反三
【单选题】Above-normal returns earned in the time interval that exists between when a favorable influence on industry demand or cost conditions first transpires and the time when competitor entry or growth fina...
A.
disequilibrium profits.
B.
a normal rate of return on investment.
C.
disequilibrium losses.
D.
economic rents.
【单选题】In a time interval , the displacement of one particle is , and a constant force is acting on the particle within the interval. The work done by the constant force on the particle is [ ].
A.
36J
B.
108J
C.
-72J
D.
48J
【单选题】Chartered companies were not granted the ---by the British King or Queen.
A.
political authority
B.
economic rights
C.
judicial authority
D.
diplomatic authority
【单选题】'_________' is defined as "The length of the path travelled by light in vacuum during a time interval of 1⁄299,792,458 seconds".
A.
1 kilogram
B.
1 meter
C.
1 centimeter
D.
1 mile
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