使用Mid函数获得子字符串时，其索引从1开始。
面对困难，人们确定目的、制定计划，去克服困难，从而实现目的的心理过程叫（）过程。 ["认识","意志","情感","思维"]
Click the Exhibit button. Which type of multiplexer is shown in the exhibit?（） [" Thin Film filter"," Fiber Bragg Grating"," Arrayed Wave Guide"," Erbium fiber amplifier"]
检查天馈线的驻波比和回波损耗值是否在规定的范围，SWR最好在（）以下。 ["1.6","1.7","1.3","1.9"]
Which of the following parameters must be specified to define the number of dispatchers that need to be started？（） ["MAX_DISPATCHERS","DISPATCHERS","MIN_DISPATCHERS","SHARED_SERVERS"]
当母线电流大于1500A时，每相交流母线的固定金具或支持金具不应（）或按规定采用（）。
