【单选题】患者,女, 75岁。左心衰竭5年。与家人争吵后心悸、气短、不能平卧、咳粉红色泡沫痰。体检:血压90/60mmHg,呼吸28次/分,神志清醒,端坐位,口唇发绀,两肺满布湿啰音及哮鸣音。患者吸氧宜采用
【单选题】当植物因吸收不到水分而发生永久萎蔫时的土壤含水量称为( )。
【多选题】将 4 mol A 气体和 2 mol B 气体在 2 L 的容器中混合并在一定条件下发生如下反应:2A(气)+B(气) 2C(气),若经 2 s(秒)后测得 C 的浓度为 0.6 mol·L - 1 ,现有下列几种说法,其中正确的是
A.
用物质 A 表示的反应的平均速率为 0.3 mol·L - 1 ·s - 1
B.
用物质 B 表示的反应的平均速率为 0.6 mol·L - 1 ·s - 1
D.
2 s 时物质 B的浓度为 0.7 mol·L - 1
【简答题】Complete the sentences with as long as provided supposing unless __________ she is injured, she should win easily.
【简答题】Choose appropriate word to fill in each blank in its proper form. regret regretful regrettable 1. We _________ to say that we cannot accept your price. 2. We are __________ that we can not sup...
【单选题】She enjoyed her work, which provided a good _____ for her energies and talents.
【单选题】It is _______competition in the market. Your price is higher than that of other companies.