皮皮学，免费搜题
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【判断题】
如果向一个表中插入数据行时,如果某字段允许空值而用户没有提供具体值,则 SQL Server 自动赋 NULL 值;A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】What were Dr. Ninn's lectures like?
A.
She was brief and to the point.
B.
She described things like a news reporter on the radio.
C.
She made the events sensible.
D.
She made history into a system.
【单选题】下列概念分类标准正确的是（ ）
A.
强酸和弱酸：每个分子能电离的H + 数目
B.
饱和溶液和不饱和溶液：溶液导电能力强弱
C.
浊液、胶体、溶液：分散剂粒子大小
D.
电解质与非电解质：化合物在水溶液或熔化状态下能否导电
【简答题】一台通用注射机主要包括 装置、 装置、液压与电器控制系统三大类部件。
【单选题】What she described as a ______detail, in my opinion, was the most important part of the plan
A.
rare
B.
plain
C.
minor
D.
mature
【单选题】The author's attitude toward the educational system she discusses can best be described as ______.
A.
cynical and unpatriotic
B.
realistic and analytical
C.
pragmatic and frustrated
D.
disenchanted and hitter
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