【单选题】夏季使用空调对空气进行降温,海上气温30℃,冷风机出口温度5℃,有凝水从空调箱流出,则其空气含湿量_______。
【判断题】The T in written is flap T.
【单选题】在放大电路中,三极管静态工作点用( )表示。
【单选题】关于支气管哮喘概念的描述正确的是
A.
支气管哮喘是一种气道慢性炎症性疾病,临床表现为反复喘息、吸气性呼吸困难等症状,多数患者可自行或经治疗后缓解
B.
支气管哮喘是支气管粘膜的慢性非特异性炎症,临床表现为反复喘息、呼气性呼吸困难等症状,多数患者可自行或经治疗后缓解
C.
支气管哮喘是多种炎性细胞参与的气道慢性炎症,临床表现为反复喘息、呼气性呼吸困难等症状,多数患者虽经治疗仍不能缓解
D.
支气管哮喘是支气管粘膜的慢性非特异性炎症,临床表现为反复喘息、吸气性呼吸困难等症状,多数患者可自行或经治疗后缓解
E.
支气管哮喘是多种炎性细胞参与的气道慢性炎症,临床表现为反复发作性的喘息、呼气性呼吸困难等症状,多数患者可自行或经治疗后缓解
【单选题】夏季使用空调对空气进行降温,海上气温30°C,冷风机出口温度5°C,有凝水从空调箱流出,则其空气含湿量_____。
【单选题】(The following is based on material written in 1996.) The Montreal Protocol on Substances that Deplete the Ozone Layer, signed in 1987 by more than150 nations, has attained its short-term goals: it ha...
A.
The levels of such chemcials in the atmosphere had decreased.
B.
The number of such chemcials that reached the atmosphere had declined.
C.
The amounts of such chemcials released had increased but the amounts that reached the atmosphere had decreased.
D.
The rate of increase in amounts of such chemicals reaching the atmosphere had decreased.
E.
The rate at which such chemicals were being reduced in the atmoshphere had slowed.
【判断题】CD8 + CTL 对靶细胞的杀伤受到了严格的 MHC-I 类分子限制性。
【单选题】在放大电路中,三极管静态工作点用( )表示。
【判断题】CD8 + CTL 对靶细胞的杀伤受到了严格的 MHC-I 类分子限制性。
【判断题】In modern linguistic studies, the written form. of language is given more emphasis than the spoken form. for a of reasons.()