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【单选题】
以下不属于组织培养操作中的消毒方法的是：A.
紫外消毒
B.
70% 酒精表面消毒
C.
酒精灯灼烧消毒
D.
100% 酒精表面消毒
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】It's Jim's birthday today. He is five years old. He gets many nice birthday presents from his family and one of them is a big drum (鼓). ' Who gives him the drum?' his father asks. ' His grandfather do...
【简答题】阅读理解。 It's Jim's birthday today. He is five years old. He gets many nice birthday presents from his family and one of them is a big drum (鼓). ' Who gives him the drum?' his father asks. ' His gran...
【单选题】Although he is five years old, he has learned more than twenty old Chinese poems _____ heart. [ ]
A.
in
B.
by
C.
to
D.
with
【简答题】阅读理解。 It is John's birthday today. He is five years old. He gets many birthday presents from his family and one of them is a nice big drum (鼓). 'Who gives him that drum?' his father asks. 'His grandfa...
【单选题】关于百日咳鲍特菌的形态特征描述正确的是
A.
革兰阳性短小杆菌,有侧鞭毛,不形成芽胞
B.
革兰阴性短小杆菌,无鞭毛,不形成芽胞
C.
革兰阴性小杆菌,有侧鞭毛,不形成芽胞
D.
革兰阳性球杆菌,多有菌毛,无鞭毛,不形成芽胞
E.
革兰阳性,多形性,多为单个或成双排列,无鞭毛,无芽胞
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