泵空气包充装氮气或空气，禁止充装氧气，充气气压为泵工作压力的（）%。
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债券根据发行______分为政府债券(包括政府机构债券)、金融债券和公司债券()
A. 性质
B. 对象
C. 目的
D. 主体
Which of the following is TRUE for the DB2 isolation level Cursor Stability (CS)?（）
An application process acquires at least a share lock on the current row of every cursor.
B. Any row that is read during a unit of work cannot be changed by other application processes until the unit of work is complete.
C. Any row changed by another application process can be read, even if the change has not been committed by that application process.
D. An application process that issues the same query more than once in a unit of work will not see additional rows caused by other application processes appending new information to the database.
含有干性油或以干性油改性的涂料可以通过氧化—聚合反应在常温下干燥。
A. 正确
B. 错误
磁感应强度相同的磁场中，长度相同的导线通以不同电流时，受力大小（）
A. 相同
B. 不同
C. 无法确定
D. 差别不大
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