【单选题】Some workers in that factory have to work ____ night.
【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】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。
【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
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。