【单选题】具有抗铜绿假单胞菌活性的头孢菌素类药物包括
【单选题】The wall was built along the river ______ floods.
【单选题】广告图形的类别,按其表现形式可分为( )。
【单选题】In the case of a time draft in a documentary collection, if the terms of presentation are not specified in the order of collection, the correct action for the collecting bank is as follows:
A.
Immediately specify the terms of presentation which asked the entrusting bank
B.
Documents are delivered after payment by the importer
C.
Documents are delivered after acceptance by the importer
D.
Documents may be delivered after acceptance or payment
【单选题】以下对头孢菌素类药物描述不正确的是()
A.
第一代头孢菌素主要作用于需氧革兰阳性球菌,仅对少数革兰阴性杆菌有一定抗菌活性
B.
第二代头孢菌素对革兰阳性球菌的活性与第一代相仿或略差,对部分革兰阴性杆菌亦具有抗菌活性
C.
第三代头孢菌素对肠杆菌科细菌等革兰阴性杆菌具有强大抗菌作用
D.
第四代头孢菌素对金葡菌等革兰阳性球菌的作用较第三代头孢菌素弱