汽油发动机火花塞两极间的击穿电压与下列()因素无关.
A. 次级线圈电压
B. 火花塞间隙
C. 气缸压力
D. 气缸温度
In which of the following situations should correlation names be used?()
A table referenced in the FROM clause has no indexed column.
B. The table referenced in the FROM clause has more than 200 columns.
C. Two or more tables in the FROM clause have identical column names.
D. The FROM clause contains two or more tables in the SELECT statement.
2011年获得法网冠军的中国女子网球运动员是孙甜甜对吗?
A. 正确
B. 错误
以课程任务为依据可把课程分为()
A. 学校课程
B. 技能性课程
C. 学生中心课程
D. 基础型课程