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举一反三
【单选题】催化二氧化碳和氨合成氨甲酰磷酸反应的酶及分布是（ ）。
A.
氨甲酰磷酸合成酶I，细胞液
B.
氨甲酰磷酸合成酶I，线粒体
C.
氨甲酰磷酸合成酶Ⅱ，细胞液
D.
氨甲酰磷酸合成酶Ⅱ，线粒体
【单选题】It’s generally agreed that the greatest threat facing the world today is the warming of the earth’s atmosphere, commonly called global warming or the greenhouse effect. But what is the cause of the gr...
A.
It’s generally agreed that the greatest threat facing the world today is the warming of the earth’s atmosphere, commonly called global warming or the greenhouse effect. But what is the cause of the greenhouse effect
B.
We have been producing too many of the gases which, when they are released into the earth’s atmosphere, trap heat, and thus raise their temperatures. There are several gases involved, but the main ones are carbon dioxide (二氧化碳) and chlorofluorocarbons (氯氟甲烷)--often called CFCs. The carbon dioxide comes from burning forests and from bunting fossil fuels such as oil and coal. The CFCs are given off by refrigerators and air-conditioning systems. Carbon dioxide is to blame for 56% of the greenhouse effect, and CFCs for 23%.
C.
The global warming we are experiencing now is only a result of the carbon dioxide and other gases we have dumped into the atmosphere up to the 1960s. In other words, the damage may have already been done. Temperatures are expected to increase by at least 1.3 Celsius degrees by 2030 and 3 degrees by the year 2070.
相关题目：
【单选题】植物：二氧化碳
A.
吸尘器：灰尘
B.
杀毒软件：病毒
C.
食物：营养
D.
臭氧层：氟利昂
【单选题】TN106二氧化碳测定仪的报警浓度是（）。
A.
500ppm
B.
1000ppm
C.
1500ppm
【单选题】二氧化碳是（）的气体。
A.
微黄色
B.
无色
C.
A.微黄色
D.
无色
【单选题】下列焊接方法中，( )是连接薄板金属和打底焊的一种极好方法。
A.
焊条电弧焊
B.
埋弧焊
C.
钨极气体保护焊
D.
等离子弧焊
【单选题】催化二氧化碳和氨合成氨甲酰磷酸反应的酶及分布是（ ）。
A.
氨甲酰磷酸合成酶I，细胞液
B.
氨甲酰磷酸合成酶I，线粒体
C.
氨甲酰磷酸合成酶Ⅱ，细胞液
D.
氨甲酰磷酸合成酶Ⅱ，线粒体
【单选题】植物：二氧化碳
A.
吸尘器：灰尘
B.
杀毒软件：病毒
C.
食物：营养
D.
臭氧层：氟利昂
【判断题】1molNa2O2与水或二氧化碳反应，转移2mole-
A.
正确
B.
错误
【单选题】二氧化碳灭火系统安装中，气体灭火剂输送的管道多采用______。
A.
直焊缝钢管
B.
单面焊螺旋缝钢管
C.
双面焊螺旋缝钢管
D.
无缝钢管
【单选题】二氧化碳罐车罐的容积是()方。
A.
20
B.
18
C.
24
D.
22
【判断题】打底焊需要大直径焊条。( )
A.
正确
B.
错误
【单选题】二氧化碳是由（ ）
A.
碳和氧气组成的
B.
碳元素和氧元素组成的
C.
一个碳原子和一个氧分子组成的
D.
一个碳原子和两个氧原子组成的
【判断题】没有二氧化碳纯气藏。
A.
正确
B.
错误
【单选题】It’s generally agreed that the greatest threat facing the world today is the warming of the earth’s atmosphere, commonly called global warming or the greenhouse effect. But what is the cause of the gr...
A.
It’s generally agreed that the greatest threat facing the world today is the warming of the earth’s atmosphere, commonly called global warming or the greenhouse effect. But what is the cause of the greenhouse effect
B.
We have been producing too many of the gases which, when they are released into the earth’s atmosphere, trap heat, and thus raise their temperatures. There are several gases involved, but the main ones are carbon dioxide (二氧化碳) and chlorofluorocarbons (氯氟甲烷)--often called CFCs. The carbon dioxide comes from burning forests and from bunting fossil fuels such as oil and coal. The CFCs are given off by refrigerators and air-conditioning systems. Carbon dioxide is to blame for 56% of the greenhouse effect, and CFCs for 23%.
C.
The global warming we are experiencing now is only a result of the carbon dioxide and other gases we have dumped into the atmosphere up to the 1960s. In other words, the damage may have already been done. Temperatures are expected to increase by at least 1.3 Celsius degrees by 2030 and 3 degrees by the year 2070.
【单选题】二氧化碳灭火系统安装中，气体灭火剂输送的管道多采用( )。
A.
直焊缝钢管
B.
单面焊螺旋缝钢管
C.
双面焊螺旋缝钢管
D.
无缝钢管
【多选题】二氧化碳对呼吸的调节是通过（）
A.
直接刺激呼吸中枢
B.
刺激颈动脉体和主动脉体
C.
加强牵张反射
D.
刺激延髓化学敏感区
E.
刺激外周呼吸肌
【单选题】二氧化碳属于()。
A.
压缩气体
B.
增塑剂
C.
氟氯烷烃化合物
D.
碳氢化合物
【判断题】钨极氩弧焊主要用于打底焊、有色金属及厚大焊件的焊接。
A.
正确
B.
错误