慢性疲劳症（） ["指健康人不明原因地出现严重的全身倦怠感","伴有低热、头痛、肌肉痛、抑郁、注意力不集中等精神症状","有时淋巴结肿大而影响正常生活的一种临床综合症","全身肢体动作放慢"]
不存在其他药物时，吲哚洛尔通过激动p受体致心率增高。但在高效日受体激动剂存在情况下，吲哚洛尔引起剂量依赖性心率降低。因此吲哚洛尔可能是（） ["不可逆性拮抗剂","生理性拮抗剂","化学拮抗剂","部分激动剂","非竞争性拮抗剂"]
钢瓶的公称压力是按（）在60℃时的饱和蒸气压确定的。 ["纯丙烯；","纯乙烯；","纯乙烷；","纯丙烷"]
国务院和省、自治区、直辖市人民政府建立健全社会保险基金监督管理制度，保障社会保险基金安全、有效运行。
Exhibit： View the Exhibit to see the data in the emp table. You created a PRIMARY KEY constraint on the empno column of the emp table， and the constraint is not deferred. Which two statements are true in this scenario？ （） ["No index would be created or used in this case.","A unique index on the empno column would be created.","A CHECK constraint would be enforced on the empno column.","A NOT NULL constraint would be enforced on the empno column.","A bitmap unique index would be created on the empno column."]
乔木类
