皮皮学，免费搜题
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搜题
【多选题】
下列选项中不属于同一类抗菌药物的是A.
多西紫杉醇
B.
特非那丁
C.
西布曲明
D.
盘尼西林
E.
阿莫西林
F.
氨苄西林
G.
氯唑西林
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】lt ________ for four days when we arrived, so the roads were very muddy.
A.
was raining
B.
would he raining
C.
had been raining
D.
has rained
【单选题】It ______ for four days when we arrived, so the roads were very muddy.
A.
was raining
B.
would be raining
C.
had been raining
D.
has rained
【单选题】It for four days when he arrived, so the roads were very muddy.
A.
was raining
B.
would be raining
C.
had been raining
D.
has rained
【单选题】Was your journey to Hawaii pleasant last summer? No, it _________ for one week when we arrived, so the roads were very muddy.
A.
has rained
B.
was raining
C.
has been raining
D.
had been raining
【单选题】若凸轮轮廓作用角为2φ,差动角为2αs,为了保证喷油泵换向后供油提前角β不变,则必须满足下列关系 。
A.
2φ = αs –β
B.
2αs = 2φ - 2β
C.
2φ = 2φ - 2β
D.
2αs = 2φ + 2β
【简答题】Muddy has been _______ a golf scholarship at the University of Hawaii.
【单选题】若凸轮轮廓作用角为2φ，差动角为2α S ，为了保证喷油泵换向后供油提前角β不变，则必须满足下列关系（）
A.
2φ=α S －β
B.
2α S =2φ－2β
C.
2φ=2α S －2β
D.
2α S =2φ＋2β
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