B737NG的发动机CFM56-7B的EEC的电源来源（）
A.EEC交流发电机
B.相应的交流转换汇流条
参考答案：A, B
The table _______ 15 by 30 feet, and I have to find another one which may be smaller but _______longer
A．measure; last
B．is measured; lasts
C．measures; last
D．measures; lasts
计量检定工作可由国家法制计量部门或其他法定授权组织进行。
