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以下哪些属于声学侦察设备?A.
声响传感器
B.
声呐
C.
扩音器
D.
麦克风
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【简答题】II . Fill in the blanks with the words or expressions given below. Change the form where necessary. C ontact to, mingle with, escape from, long to , to be taken from 1. If we _________the crowd, we sh...
【简答题】II . Fill in the blanks with the words or expressions given below. Change the form where necessary. C ontact to, mingle with, escape from, long to , to be taken from 1. If we _________the crowd, we sh...
【简答题】( )28、上端站防端站越位保护开关自上而下的排列顺序是 。 A、强迫缓速、极限、限位; B、极限、强迫缓速、限位; C、限位、极限、强迫缓速; D、极限、限位、强迫缓速;
【简答题】Fill in the blanks with words or phrases from Reading A that match the meanings in the right column. The first letters are already given. 写答案时写完整的单词 1. d______ the action of allowing someone to go a...
【简答题】根据汉语提示完成下列句子,每空一词。 1. What does CCTV ________ ________(代表), d o yo u know? 2. When did you take part in your school sports meeting __ ______ ________(上次)? 3. I'm sorry to say you've got ________ __ __...
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