适用性的质量揭示了质量的重要特征是产品适用性因( )而异。
A.时间
B.人
C.地域
D.市场竞争
参考答案:A,B,C
当混合使用分别以次氯酸和盐酸为主要成分的两种洗涤剂时,会造成人体中毒,其主要污染物可能是()。
A.氯酸
B.盐酸
C.次氯酸
D.氯气
E.氮气
Which of the following laboratory tests should be monitored closely by the nurse while the client is receiving heparin therapy
A.International normalized ratio (INR).
B.Activated partial thromboplastin time (APTT).
C.Prothrombin time (PT).
D.Thrombin time.