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【简答题】
简述过滤池的结构及功能。
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反馈参考答案：
举一反三
【简答题】Complete the notes below with one or two words or numbers. 1. Some factory workers work ________ a day, and factory ________ have killed people. Many earn less than ________ a day. 2. In the Democrati...
【简答题】你认为你在学校属于好学生吗？
【简答题】They became factory workers and lawyers and (2) ______ and doctors, one President of the United States. Some developed (3) ______ . A few developed schizophrenia.
【多选题】下列关于营养强化剂,错误的是
A.
叶酸摄入量不足可以导致神经管缺陷及其他先天性疾病发生率增加。
B.
备孕期和怀孕前期必须补充叶酸。
C.
维生素D和钙的吸收无关。
D.
水溶性维生素C可以较长时间存在人体内。
【简答题】Listen to the recording and complete the notes below with one or two words . 1. Some factory workers work 10 to 12 hours a day, and erous working [1] and factory fires often kill workers . Many w...
【简答题】Some factory workers work 1)_____ a day and factory 2)_____ have killed people. Many earn less than 3)_____ a day.
【多选题】下列关于切花的采收说法不正确的有
A.
大部分切花宜在晚上采收。
B.
在能保证花蕾正常开放、不影响品质的前提下，应尽可能在充分发育的花蕾期采切。
C.
剪切时应形成一平面，以缩小损伤面积，同时立即将切花基部插入保鲜液中。
D.
采切预留的花茎应尽量长。
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