经过以下代码，t的结果是 t1=(1, 'a')[br][/br] t2=(2, 'b') t = t1 + t2 A: (3,'ab') B: ((1,'a'),(2,'b')) C: (1,'a',2,'b') D: (3,'a','b')

Bioavailability of drugs is A: established by FDA regulation at 100% for preparations for intramuscular injection B: 100% for oral preparations that are not metabolized in the liver C: calculated from the peak concentration of drug divided by the dose administered D: important because bioavailability determines what fraction of the administered dose reaches the systemic circulation E: equal to 1 (100%) only for drugs administered by any parenteral route

Before administering a medication, the nurse must verify the rights of medication administration, which include: A: right patient, right bed, right drug, right route, right dose, and right time. B: right drug, right dose, right route, right time, right physician, and right documentation. C: right patient, right drug, right route, right time, right documentation, and right equipment. D: right patient, right drug, right dose, right concentration, right route, right time, and expiration date.

Drug efficacy refers to A: the range of diseases in which the drug is beneficial B: the maximal intensity of response that can be produced by the drug C: the therapeutic dose range of the drug D: the therapeutic index of the drug E: the minimal intensity of response that can be produced by the drug

Which of the following dose not belong to the six principles for teaching reading?