题目内容 (请给出正确答案)
提问人:网友13***556 发布时间:2022年3月24日 03:47
[问答题]

简述微型生物食物环在海洋生态系统在物质循环中的作用。

参考答案
十点题库官方参考答案 (由十点题库聘请的专业题库老师提供的解答)
更多“简述微型生物食物环在海洋生态系统在物质循环中的作用。”相关的问题
化学剥脱术后正常痂皮脱落的时间是()
A.3-5天
B.7-10天
C.11-12天
D.13-14天
E.14天以上
点击查看答案
九味羌活汤的功用是A.散风除湿,宣痹止痛B.疏风通络,散寒除湿C.发汗祛湿,兼清里热D.疏风清热,宣痹
九味羌活汤的功用是 A.散风除湿,宣痹止痛 B.疏风通络,散寒除湿 C.发汗祛湿,兼清里热 D.疏风清热,宣痹止痛 E.发汗解表,祛风胜湿
点击查看答案
Mother and Children It was Christmas 1961. I was teaching in a small town in Ohio where my twenty-seven third graders eagerly anticipated the great day of gifts giving. A tree covered with tinsel(闪光片的) and gaudy(艳丽的) paper chains graced one corner. In another rested a manger(食槽) scene produced from cardboard and poster paints by chubby(微胖的), and sometimes grubby(不干净的), hands. Someone had brought a doll and placed it on the straw in the cardboard box that served as the manger. It didn’t matter that you could pull a string and hear the blue-eyed, golden-haired dolly say, "My name is Susie." "But Jesus was a boy baby!" one of the boys proclaimed. Nonetheless, Susie stayed. Each day the children produced some new wonder—strings of popcorn, hand-made trinkets, and German bells made from wallpaper samples, which we hung from the ceiling. Through it all she remained aloof(避开的), watching from afar(遥远地), seemingly miles away. I wondered what would happen to this quiet child, once so happy, now so suddenly withdrawn. I hoped the festivities would appeal to her. But nothing did. We made cards and gifts for mothers and dads, for sisters and brothers, for grandparents, and for each other. At home the students made the popular fried marbles and vied(竞争) with one another to bring in the prettiest ones. "You put them in a hot frying pan, Teacher. And you let them get real hot, and then you watch what happens inside. But you don’t fry them too long or they break. " So, as my gift to them, I made each of my students a little pouch for carrying their fried marbles. And I knew they had each made something for me. bookmarks carefully cut, colored, and sometimes pasted together; cards and special drawings; liquid embroidery doilies, hand-fringed, of course. The day of gift-giving finally came. We oohed and aahed over our handiwork as the presents were exchanged. Through it all, she sat quietly watching. I had made a special pouch for her, red and green with white lace. I wanted very much to see her smile. She opened the package so slowly and carefully. I waited but she turned away. I had not penetrated the wall of isolation she had built around herself. After school the children left in little groups, chattering about the great day yet to come when long hoped-for two-wheelers and bright sleds would appear beside their trees at home. She lingered, watching them bundle up and go out of the door. I sat down in a child-sized chair to catch my breath, hardly aware of what was happening, when she came to me with outstretched hands, bearing a small white box, unwrapped and slightly soiled, as though it had been held many times by unwashed, childish hands. She said nothing. "For me" I asked with a weak smile. She said not a word, but nodded her head. I took the box and gingerly opened it. There inside, glistening green, a fried marble hung from a golden chain. Then I looked into that elderly eight-year-old face and saw the question in her dark brown eyes. In a flash I knew—she had made it for her mother, a mother she would never see again, a mother who would never hold her or brush her hair or share a funny story, a mother who would never again hear her childish joys or sorrows. A mother who had taken her own life just three weeks before. I held out the chain. She took it in both her hands, reached forward, and secured the simple clasp at the back of my neck. She stepped back then as if to see that all was well. I looked down at the shiny piece of glass and the tarnished golden chain, then back at the giver. I meant it when I whispered," Oh, Maria, it is so beautiful. She would have loved it. "Neither of us could stop the tears. She stumbled into my arms and we wept together. And for that brief moment I became her mother, for she had given me the greatest gift of all: herself and love.
A. Mom and daughter.B. Grandma and granddaughter.C. Sisters.D. Teacher and student.
点击查看答案
与香附调经止痛功效有关的药理作用是()
A、抑制子宫
B、雌激素样作用
C、抗炎
D、镇痛
E、保肝
点击查看答案
下列过程中需要DNA连接酶的是()
A.DNA复制
B.DNA转录
C.DNA断裂
D.DNA的甲基化
E.DNA的乙酰化
点击查看答案
如果消费者经常指名的商品而商店未订货,应对()进行相应考核。
A.促销人员B.理货人员C.仓库管理人员D.采购人员
点击查看答案
教师不得因为各种理由随意对学生进行搜查,不得关禁闭,这是由学生的( )决定的。
A.身心健康权 B.人身自由权 C.人格尊严权 D.隐私权
点击查看答案
各分支机构须对客户的个人信用信息以及依法履行反洗钱职责获得的客户身份资料、大额交易和可疑交易信息予以保密。
点击查看答案
UML使用()来描述接口和实现接口的类之间的关系。
A.关联关系
B.泛化关系
C.依赖关系
D.实现关系
点击查看答案
6月1日12时起,我国()海域全面进入伏季休渔期。渔村码头整列的渔船开始陆续进港停泊,进入一年一度的休整阶段。
A . 东海、渤海、南海
B . 黄海、东海、南海
C . 黄海、渤海、南海
D . 黄海、渤海、东海
点击查看答案
根据现行部颁及2016营改增文件规定,建筑工程间接费的计算基础为直接费,河道工程模板工程间接费的费率为()。
A.6%~7%
B.7%~8%
C.8%~9%
D.9%~10%
点击查看答案
光电直读光谱仪有()个出射狭缝。
A、一个
B、二个
C、多个
点击查看答案
在两个50~54岁的男性人群中下列部位肿瘤的新发病例如下表 结论:50~54岁男性人群中乙人群比甲人群更易发生上述3种肿瘤()
A.正确 B.不正确,因未用发病率比较 C.不正确,因未校正两个人群年龄构成上的差异 D.不正确,因使用的是绝对数 E.不正确,因两组除了年龄外,可能存在其他特征的差异
点击查看答案
患儿,2岁。因面色苍白.酱油色尿半年就诊。实验室检查结果:贫血,红细胞寿命缩短总胆红素及间接胆红素升高。最可能的诊断是:().
A.溶血性黄疸
B.肝细胞性黄疸
C.肝内胆汁淤积性黄疸
D.肝外胆汁淤积性黄疸
E.先天性非溶血性黄疸
点击查看答案
砖砌检查井用水泥砂浆抹面其厚度一般为()cm。
A.0.5
B.1
C.1.5
D.2
点击查看答案
客服
TOP