…蚀警告：严ç¦åœ¨è®¾å¤‡é™„近对具有è…蚀性的液体或气体进行æ“作', 'answer5' => '', 'answer6' => '', 'correct' => 'A,B,C,D,E,F,', 'jiexi' => '', 'corrects' => '0', 'incorrects' => '0', 'wid' => '64112', 'dateline' => '1670470513', 'status' => '1', 'ztid' => '20', 'ztid1' => '0', 'ztid2' => '0', 'export' => '0', ), 4 => array ( 'tkid' => '119535', 'ques' => '针对代维安全生产，å„代维公å¸è¦å»ºç«‹ï¼ˆï¼‰ï¼Œæˆç«‹å®‰å…¨ç”Ÿäº§ç®¡ç†æœºæž„', 'questype' => '10', 'grade' => '0', 'qtype' => '1', 'answer1' => '本å•ä½å®‰å…¨ç”Ÿäº§æ“作规程', 'answer2' => '本å•ä½å®‰å…¨ç”Ÿäº§å®žæ–½ç»†åˆ™å’Œæ“作规程', 'answer3' => '本å•ä½æ“作规程', 'answer4' => '本å•ä½å®‰å…¨ç”Ÿäº§å®žæ–½ç»†åˆ™', 'answer5' => '', 'answer6' => '', 'correct' => 'B', 'jiexi' => '', 'corrects' => '0', 'incorrects' => '0', 'wid' => '64112', 'dateline' => '1670470513', 'status' => '1', 'ztid' => '20', 'ztid1' => '0', 'ztid2' => '0', 'export' => '0', ), ); $expiration1 = '1755077443'; ?> 移动通信所用的电å­åœ°å›¾å¿…须包括()等对电波传播有影å“的地ç†ä¿¡æ¯,是传播模型修正的é‡è¦åŸºç¡€æ•°æ®ã€‚_ç­”æ¡ˆä¸Žè§£æž - 5G通信
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移动通信所用的电å­åœ°å›¾å¿…须包括()等对电波传播有影å“的地ç†ä¿¡æ¯,是传播模型修正的é‡è¦åŸºç¡€æ•°æ®ã€‚(多选题)

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