左旋咪唑的主要适应证: A.口服治疗反复感染的免疫力低下患者 B.注射治疗细胞免疫缺 发布时间:2021-07-26 09:30 │ 来源:www.tikuol.com 题型:单项选择题 问题: 左旋咪唑的主要适应证:A.口服治疗反复感染的免疫力低下患者B.注射治疗细胞免疫缺陷性疾病C.血小板减少性紫癜D.白血病辅助性免疫疗法E.肾移植
题型:单项选择题 In low-speed network, it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high-speed networks, this approach often works poorly, because in the (61) between sending the notification and notification arriving at the source, thousands of additional (62) may arrive. In ATM network, a major tool for preventing (63) is (64) control. When a host wants a new virtual (65) , it must describe the traffic to be offered and the service expected.A.packetsB.cellsC.messageD.files 查看答案
题型:单项选择题 下列用化学方程式表示的反应原理符合实验目的,且化学方程式书写正确的是( )A.制取少量的硫酸铜:Cu(NO3)2 + Na2SO4═══ CuSO4 + 2NaNO3B.用稀硫酸除去铁锈: Fe2O3 + 3H2SO4═══ Fe2(SO4)3 + 3 H2O C.验证铜的金属活动性比银强:Cu +2 AgCl═══ CuCl2 + 2 AgD.除去硝酸钾溶液中混有的少量硫酸钾 K2SO4 + BaCl2═══ 2KCl+ BaSO4↓ 查看答案