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【单选题】
下列关于shelve模块说法错误的是(___)。
A.
shelve模块通过构造一个简单的数据库,像操作字典一样按照键存储和获取本地的Python对象。
B.
shelve模块打开文件后,文件的键必须是字符串且唯一。
C.
shelve中保存的列表对象可以直接进行添加数据元素的操作。
D.
操作开始必须打开shelve,并且在修改后需要关闭它。
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【单选题】有些寄生虫在宿主体内通常处于隐性感染状态,但当宿主免疫功能受累时,可出现异常增殖且致病力增强,这些寄生虫称为( )
A.
机会致病寄生虫
B.
兼性寄生虫
C.
偶然寄生虫
D.
体表寄生虫
【单选题】有些寄生虫在宿主体内通常处于隐性感染状态,但当宿主免疫功能受累时,可出现异常增殖且致病力增强,这些寄生虫称为
A.
机会致病寄生虫
B.
偶然寄生虫
C.
兼性寄生虫
D.
专性寄生虫
E.
体内寄生虫
F.
体表寄生虫
【单选题】有些寄生虫在宿主体内通常处于隐性感染状态,但当宿主免疫功能受累时,可出现异常增殖且致病力增强,这些寄生虫称为
A.
兼性寄生虫
B.
偶然寄生虫
C.
体表寄生虫
D.
机会致病寄生虫
【单选题】有些寄生虫在宿主体内通常处于隐性感染状态,但当宿主免疫功能受累时,可出现异常增殖且致病力增强,这些寄生虫称为
A.
偶然寄生虫
B.
专性寄生虫
C.
机会致病寄生虫
D.
兼性寄生虫
【单选题】空气流经阀门,其焓变化 mso-fareast-font-family:宋体;color:#333333;mso-font-kerning:0pt">_____ ,压力变化 mso-font-kerning:0pt">_____ ,熵变化 mso-fareast-font-family:宋体;color:#333333;mso-font-kerning:0pt">_____ ,温度变化 mso-f...
A.
小于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,等于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,等于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,大于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0
B.
等于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,小于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,大于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,小于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0
C.
等于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,小于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,大于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,等于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0
D.
等于 mso-fareast-font-family:宋体;color:#666666;mso-font-kerning:0pt">0 ,小于 mso-font-kerning:0pt">0 ,小于 mso-fareast-font-family:宋体;color:#666666;mso-font-kerning:0pt">0 ,大于 mso-font-kerning:0pt">0 mso-font-kerning:0pt">
【简答题】例行型购买通常分为两种:品牌忠诚型购买和( )。
【简答题】主动脉弓的凸侧由右向左依次发出 头臂干 、 和 三条动脉
【简答题】例行型购买通常分为两种:品牌忠诚型购买和 型购买。A. 习惯
【简答题】例行型购买通常分为两种:品牌忠诚型购买和( )型购买。
【判断题】主动脉弓的凸侧由左向右依次发出头臂干、左颈总动脉和左锁骨下动脉。
A.
正确
B.
错误
相关题目:
【单选题】空气流经阀门,其焓变化 mso-fareast-font-family:宋体;color:#333333;mso-font-kerning:0pt">_____ ,压力变化 mso-font-kerning:0pt">_____ ,熵变化 mso-fareast-font-family:宋体;color:#333333;mso-font-kerning:0pt">_____ ,温度变化 mso-f...
A.
小于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,等于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,等于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,大于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0
B.
等于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,小于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,大于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,小于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0
C.
等于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,小于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,大于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0 ,等于 mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN; mso-bidi-language:AR-SA">0
D.
等于 mso-fareast-font-family:宋体;color:#666666;mso-font-kerning:0pt">0 ,小于 mso-font-kerning:0pt">0 ,小于 mso-fareast-font-family:宋体;color:#666666;mso-font-kerning:0pt">0 ,大于 mso-font-kerning:0pt">0 mso-font-kerning:0pt">