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 storage specialist discovers that a new customer likes the technical aspects of the IBM SystemStorage DS8000 and they plan to recommend it to their vice president. Which of the following isthe next logical step for the storage specialist?（） give a product presentation to the board 。 meet with the president to discuss total cost of ownership 。 provide a demonstration of the DS8000 to the network and database administrators 。 schedule a meeting with the higher-level executives to discuss budget and leasing optio。
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。
培训
完全自主独立的服务器可视为设立在该服务器所在国的常设机构，该服务器是（）
