【单选题】下列属于吡唑酮类非甾体抗炎药的是( )。
【判断题】拆零药品记录应从开始拆零至销售完毕或有质量问题撤柜。
【单选题】若存储周期 250ns ( 1s=109 ns ),每次读出 16 位,则该存储器的数据传送率为( )
【单选题】过渡元素高价化合物在酸性条件下有较强的氧化性,如KMnO 4 、Na 2 WO 4 (钨酸钠)等,钨的最高价为+6价。现有钨酸钠晶体(Na 2 WO 4 ·2 H 2 O)0.990g加水溶解后,再加入一定量的 锌和稀H 2 SO 4 ,反应生成一种蓝色化合物(可看作含+5价、+6价混合价态的钨的氧化物)且无H 2 产生。现用0.044mol/L KMnO 4 酸性溶液滴定这种蓝色化合物恰好将其氧...
【单选题】Assume a country that produces only cloth and paddy. Cloth production requires significant amounts of labor and capital, but relatively less land. Assume that paddy production requires relatively less...
A.
the production of both paddy and cloth will increase.
B.
the production of cloth will increase, but that of paddy will remain unchanged.
C.
the production of cloth will increase, but that of paddy will decline.
D.
the production of paddy will increase, but that of cloth will remain unchanged.
【单选题】属于3,5-吡唑烷酮类的非甾体抗炎药是( )。
【单选题】去神经的骨骼肌,下列哪种药物能使其兴奋收缩( )