Which three of these are characteristics of UTP cable?()
A. The wires in each pair are wrapped around each other
B. An insulating material covers each of the individual copper wires in it
C. It comes in eight-pair wire bindles
D. EMI and RFI cause only limited degradation to signals running over it
E. It comes in seven categories
F. IT has an external diameter of approximately 0 28 inche
在下列货币政策操作中,引起货币供应量增加的是()。
A. 提高法定存款准备金率
B. 提高再贴现率
C. 降低再贴现率
D. 中央银行卖出债券
孕妇马某,23岁,先心病患者,于妊娠22周时因上呼吸道感染出现呼吸困难,不能平卧,心律不齐,心率130次/分,经住院治疗后出院。现孕35周,查血压120/80mmHg,心率88次/分,心尖部闻及舒张期杂音,日常活动稍有心慌不适,休息时无自觉症状。对该孕妇产褥期护理错误的是()。
A. 产后72小时严密监测生命体征
B. 产妇应半卧位或左侧卧位,保证充足休息
C. 可以母乳喂养,单避免过劳
D. 保持外阴部清洁
E. 如无感染不必应用抗生素