【单选题】某闭环调速系统的调速范围是1500~150r/min,要求系统的静差率<2%,那么系统允许的静态速降是( )。
【单选题】患者,男,42岁,因高处坠落致内脏破裂大出血而欲行急诊手术治疗。去手术室之前,护士遵医嘱迅速为患者建立了静脉通道并进行输血治疗。因时间紧迫,从血库取回血后,为了尽早将血输给患者,护士便将血袋放在热水中提温,5分钟后为患者输入。当输入15分钟左右,患者感到头部胀痛,出现恶心呕吐,腰背部剧痛。发生此反应时护士首选的护理措施是()
【单选题】下列对肺炎球菌肺炎患者的护理措施中,不正确的是
【单选题】听力原文:W: Would you call a taxi to take me to the bus station? M: Call a taxi? I'll take you myself. Q: What does the man mean? (15)
A.
She should call the taxi herself.
B.
The taxi driver is a friend of his.
C.
He's taking the same bus she is.
D.
He'll drive her to the bus station.
【多选题】商业信用是现代信用的基本形式,下列关于它的表述中,正确的有______。( )
【单选题】听力原文:W: Would you call a taxi to take me to the bus station? M: Call a taxi? I'll take you myself. What does the man mean?
A.
She should call the taxi herself.
B.
The taxi driver is a friend of his.
C.
He's taking the same bus she is.
D.
He'll drive her to the bus station.
【单选题】某闭环调速系统的调速范围是1500~150r/min,要求系统的静差率2%s ,那么系统允许的静态速降是()。
【单选题】物流系统产生的产品位置与场所的转移,提供的各种物流服务、履行合同等,称为物流系统的()