【单选题】Jason makes friends ______.
【单选题】直流电机的结构主要分定子、转子和 ( ) 。
【多选题】下列各项中,影响营业利润的项目有 ( )。
【单选题】中国梦是( )和民族情怀、人民情怀相统一的梦:
【判断题】在发掘新客户时使用保本销售量分析和在服务现有客户时一样重要。
【判断题】特种设备是指涉及生命安全、危险性较大的锅炉、压力容器(含气瓶)、压力管道、电梯、起重机械、道、大型游乐设施等。()
【单选题】Jason buys only music downloads and food with his weekly income. In response to a decrease in the price of downloads, he buys more downloads and less food. As a result, we would expect:
A.
the marginal utility of downloads to increase and the marginal utility of food to decrease.
B.
the marginal utility of both downloads and food to remain unchanged.
C.
the marginal utility of downloads to decrease and the marginal utility of food to increase.
D.
the marginal utility of food to become negative.
【单选题】1928年底,在东北宣布“遵守三民主义,服从国民政府,改易旗帜”的是()
【单选题】患者,女,31岁,受凉后发热咳嗽、咳痰一周气促3天,意识模糊1小时,查体:T39.5℃,血压70/50mmHg,口唇发绀,双肺可闻及较多湿啰音,心率115/分,未闻及杂音,四肢冷,血常规WBC21×10/L,N0.90。该患者经过抗感染等综合治疗后症状有所改善,血压100/60mmHg,动脉血气分析(面罩吸氧SUmin)提示:PaO50mmHg,PaCO28mmHg,HCO16mmol/L。此时首...