某台20MVA，66/10.5KVY/△-11接线变压器差动保护的电流互感器二次侧接线为△/Y接线，其中电流互感器二次接线为△接线的接法是（）。 ["A头C尾，B头A尾，C头B尾","A头B尾，B头C尾，C头A尾","上述两种接线都可以"]
The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) Which statement finds the highest grade point average (GPA) per semester?（） [" SELECT MAX (gpa) FROM student _ grades WHERE gpa IS NOT NULL;"," SELECT (gpa) FROM student _ grades GROUP BY semester_end WHERE gpa IS NOT NULL;"," SELECT MAX (gpa) FROM student _ grades WHERE gpa IS NOT NULL GROUP BY semester_end;"," SELECT MAX (gpa) GROUP BY semester_end WHERE gpa IS NOT NULL FROM student _ grades;"," SELECT MAX (gpa) FROM student _ grades GROUP BY semester_end WHERE gpa IS NOT NULL"]
跳远的空中动作有（）、（）和（走步式）。
A customer plans to consolidate multiple business unit applications on a single Power Systems server. The maximum number of cores which can be used by each business unit must be limited by creating shared processor pools. What is the minimum PowerVM Edition which provides this feature?（） ["Basic","Express","Standard","Enterprise"]
企业成长的过程类似树木成长的过程，小企业是沿着“工人—小企业—大企业”这一过程发展，而大企业逐渐失去生命力最终让位于小企业。这一理论是（） ["经济进化论","不完全 市场理论","规模经济理论","产业分工理论"]
课例研究是（）的阶梯。
