更多“
装置大检修加堵盲板的要求是（）
A.应有盲板图，盲板要统一编号B.盲板厚度一般应不小于管壁厚度C.盲板要以钢板为主，可以用铁皮或石棉板代替D.专人负责
点击查看答案
关键成功要素法（CSF）是对企业运营的（）进行辨识，从而了解企业的信息需求，确定信息系统在企业中的位置
A.关键要素
B.IT技术
C.决策方法
D.决策信息
点击查看答案
在Acrobat6.0中具有将扫描得到的PDF文档进行OCR处理——Recognize Text Using OCR的功能，要使用该功能，一般要求扫描分辨率的范围设为：（）
A.150~300 B.200~600 C.300~800 D.600~1200
点击查看答案
当多台塔式起重机在同一施工现场交叉作业时，应编制（），并应采取防碰撞的安全措施。
A.专项方案B.技术指导C.安全技术D.安装指导
点击查看答案
Too much metal in the soil is considered pollution. Yet too little metal in a person’s diet can cause health problems. An American scientist says the answer to both problems may be plants that take up large amounts of metal in their tissues. David Salt is an expert on plants at Purdue University in West Lafayette, Indiana. He is working with plants that store large amounts of metals. In recent years, scientists have shown interest in using such plants to clean up harmful waste materials, Professor Salt says such plants also could be used to improve people’s diets or even to create foods that fight cancer. Humans need a number of metals in their diets, including iron and zinc. These metals are needed in very small amounts, however. That is why they are called micronutrients. The lack of micronutrients is blamed for health problems in many developing countries. Children and pregnant women are mostly affected. Recently, Mr. Salt announced that he has identified and copied the genes from a kind of plant that stores metals in its tissues. He says his study suggests it may be possible to develop plants that contain minerals needed for good health. For example, the metal selenium is a strong anti-cancer agent. Some wild plants store selenium naturally. Mr. Salt says foods to fight cancer might be created if genes from these plants could be moved into crop plants. Locoweed, which is a common plant in the western U. S., stores selenium. Professor Salt says it may be possible to create cancer-fighting foods from it. He and scientists from a company called Unicycle Therapies have copied the gene that causes locoweed to take up selenium from the soil. Many people take pills to add important minerals or vitamins to their diet. However, Mister Salt notes that most selenium products sold in health food stores are of little use. That is because the human body can only take in and use selenium if it is in the right chemical form. The scientist says his team would like to develop a vegetable crop high in selenium. He wants to create an anti-cancer product in the foods we already eat.
Too much metal in the soil is considered pollution. Yet too little metal in a person’s diet can cause health problems. An American scientist says the answer to both problems may be plants that take up large amounts of metal in their tissues.
David Salt is an expert on plants at Purdue University in West Lafayette, Indiana. He is working with plants that store large amounts of metals.
In recent years, scientists have shown interest in using such plants to clean up harmful waste materials, Professor Salt says such plants also could be used to improve people’s diets or even to create foods that fight cancer.
Humans need a number of metals in their diets, including iron and zinc. These metals are needed in very small amounts, however. That is why they are called micronutrients. The lack of micronutrients is blamed for health problems in many developing countries. Children and pregnant women are mostly affected.
Recently, Mr. Salt announced that he has identified and copied the genes from a kind of plant that stores metals in its tissues. He says his study suggests it may be possible to develop plants that contain minerals needed for good health.
For example, the metal selenium is a strong anti-cancer agent. Some wild plants store selenium naturally. Mr. Salt says foods to fight cancer might be created if genes from these plants could be moved into crop plants.
Locoweed, which is a common plant in the western U. S., stores selenium. Professor Salt says it may be possible to create cancer-fighting foods from it. He and scientists from a company called Unicycle Therapies have copied the gene that causes locoweed to take up selenium from the soil.
Many people take pills to add important minerals or vitamins to their diet. However, Mister Salt notes that most selenium products sold in health food stores are of little use. That is because the human body can only take in and use selenium if it is in the right chemical form.
The scientist says his team would like to develop a vegetable crop high in selenium. He wants to create an anti-cancer product in the foods we already eat.
点击查看答案
《客运站车醉酒旅客处置办法》（客管函〔2017〕40号）规定：醉酒旅客如情绪过激，影响列车运行秩序和旅客安全时，列车长应将醉酒旅客交列车运行前方（）。
A.三等以上车站
B.派出所所在地车站
C.县、市所在地车站
D.停车站
点击查看答案
在化学致癌过程中，具有可逆性的过程是（ ）。
A. B. C. D. E.
点击查看答案
国际贸易术语是用来表示（）。
A.商品的价格构成
B.货物风险的划分
C.买卖双方在交易中的权利义务
D.买卖双方在交易中的费用分担
点击查看答案
不保留受者下腔静脉的原位肝移植是（ ）
A.标准式原位肝移植 B.背驮式原位肝移植 C.劈离式原位肝移植 D.异位肝移植 E.以上都不是
点击查看答案
吸收式制冷，加热时能使工质对溶液___ 。
A.溶解B.组合C.分组D.升温
B.组合C.分组D.升温
C.分组D.升温
D.升温
点击查看答案
以下哪种情况禁用热疗（）
A . 老年、小儿
B . 急性结膜炎
C . 胃肠痉挛
D . 麻醉未清醒
E . 肛门疾患
点击查看答案
在谈话结束或者收到函询回复后，谈话函询工作应当（）日内报批办结。
A.10 B.15 C.20 D.30
点击查看答案
氧气筒压力表上指针降至__________时即不可再用，以防止__________进入筒内，于再次充气时引起__________。
点击查看答案
结算账户的期末余额（）。
A.在借方
B.在贷方
C.可能在借方，也可能在贷方
D.一般在借方，有时也会在贷方
点击查看答案
题目内容
（请给出正确答案）
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）
