【简答题】- You have made great progress in your studies of English, haven’t you? - Yes, but much ______. A .is remained to be done B. is remained to do C. remains to be done D. remains to do
【单选题】You have made a mistake --- you have _______ the letter “e”.
【单选题】______your computer has a virus protection programme, you might still fall victim to e-mail scams or other malicious software.
【单选题】下列关于动物细胞培养的叙述,正确的是( )
【单选题】下列关于动物细胞培养的叙述不正确的是:
B.
动物细胞培养前一般要用胰蛋白酶处理,以使细胞分散。
D.
目前使用的或冷冻保存的正常细胞通常为10代以内的,以保持其正常核型。
【判断题】图纸会审过程需整理成为图纸会审记录,由各方代表签字盖章认可。