【单选题】The value added of an item produced refers to:
A.
a firm's profits on the item sold.
B.
the value of the labor inputs in the production of an item.
C.
the value of a firm's output less the value of its costs.
D.
the value of a firm's output less the value of the intermediate goods that the firm purchases.
【简答题】卧室照明开关应在门口与床头选用 控开关;
【单选题】氟喹诺酮类药物对厌氧菌呈天然抗菌活性,但属例外的是()
【判断题】喹诺酮类药物因为有4-喹诺酮-3-羧基的基本结构,所以此类药物呈酸性。( )
【单选题】在药物不良反应监测中需呈报依赖性的非麻醉药品是( )。
【单选题】在药物不良反应监测中需呈报依赖性的非麻醉药品是