One question per day [20100412—20100413: Water treatment microorganisms – only multiple-choice questions]

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Currently, all members have the permission to use hidden replies; please cooperate actively. No scoring is given in principle if it is not hidden. For multiple accounts under the same IP, only the first response indicating participation is valid. Thank you all! To hide the method, click here: Hide Method 61. Among the following microorganisms, which ones belong entirely to the filamentous fungi? () A. Chlamydia, sulfur-oxidizing bacteria, iron bacteria B. Sulfur-oxidizing bacteria, typhoid bacteria, iron bacteria C. Chlamydia, typhoid bacteria, iron bacteria D. Sulfur-oxidizing bacteria, streptomyces, iron bacteria 62. Which of the following groups of animals belongs to protozoa? () A. Rotifers B. Flagellates C. Nematodes D. Crustaceans 63. The concentration of normal saline is (). A. 8% B. 5% C. 2% D. 0.8% 64. The relationship between phages and bacteria reflects the ( ) among microorganisms. A. Alternation of generations B. Symbiotic relationship C. Antagonistic relationship D. Parasitic relationship 65. Lichens reflect the ( ) between microorganisms. A. Alternation relationship B. Symbiotic relationship C. Antagonistic relationship D. Parasitic relationship. Everyone is welcome to participate actively; in principle, 3 points are awarded for each question. Those who answer all questions correctly will receive 15 wealth points, while those who answer some questions correctly will be scored based on the number of correct answers! To eliminate meaningless posts, abolish the minimum 5-point requirement! Note: Scores will be given and answers will be released uniformly after the topic is closed. Friends in the environmental protection industry and those interested in this field are encouraged to participate. A new year brings new hopes; best wishes to HaiChuan and all my friends! Plagiarism is strictly prohibited, repeated posting is forbidden, and friend rating is prohibited; violators will have points deducted!