题目内容

消心痛治疗心绞痛的作用原理是

A. 减慢心率,降低心肌收缩力、减少心肌耗氧量
B. 通过抑制钙离子进入冠脉、周围血管壁平滑肌细胞内而扩张冠脉及周围血管
C. 抑制血小板聚集
D. 改善心肌营养与代谢
E. 扩张冠脉及外周血管,减轻心脏负担

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2比3比1溶液

A. 1/2张
B. 1/3张
C. 1/4张
D. 2/3张
E. 等张

A firm has net cash sales of $3500, earnings after taxes (EAT) of $1000, depreciation expense of $500, cost of goods sold (COGS) of $1500, and cash taxes of $ 500. Also, inventory decreased by $100, and accounts receivable increased by $300. What is the firm’s cash flow from operations()

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What will he bring to school tomorrow

A. He will bring a photo to school.
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30岁,女性,6年前和两年前分别足月顺产一男孩和一女孩,4个月前有一次宫外孕手术,前来咨询避孕措施。 服用一年半后要求停用,为避免月经失调,应该做何处理

A. 服最后一次药后,加服炔雌醇至下次月经前
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C. 服最后一次药后,加服孕激素至下次月经前
D. 服最后一次药后来月经的第5天开始口服短效避孕药,连服3个月
E. 停药后观察,出现症状对症治疗

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