题目
A. SUM(start_date)
B. AVG(start_date)
C. COUNT(start_date)
D. AVG(start_date, end_date)
E. MIN(start_date)
F. MAXIMUM(start_date)
第3题
A.examined
B.to examine
C.examining
D.examine
第5题
A.A.Use a hole instrument to examine the turbine internally
B.B.Use a borescope to examine the combustor internally
C.C.Use a hole instrument to examine the combustor externally
第9题
A.believe
B.examine
C.see
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