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【单选题】
社会保障的概念首先是在《社会保障法案》中提出的，其颁布国家是（）。
A.
美国
B.
英国
C.
德国
D.
法国
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参考答案：
举一反三
【多选题】力矩是矢量,力 矩的三要素是( ) 。
A.
大小
B.
长度
C.
转向
D.
作用面
查看完整题目与答案
【单选题】Which of the following statements about carbon monoxide (CO) poisoning is wrong?
A.
CO, a colorless, odorless gas, is responsible for more than half of yearly deaths due to poisoning worldwide. In the United States alone, nearly 4,000 people succumb to CO poisoning each year, both accidentally and intentionally.
B.
CO has an approximately 2,500-fold greater affinity for hemoglobin than does oxygen. Consequently, relatively low levels of CO can have substantial and tragic effects.
C.
When CO combines with hemoglobin, the complex is referred to as carboxyhemoglobin, or COHb.
D.
In the United States, the government-mandated (Occupational Safety and Health Administration, OSHA) limit for CO at worksites is 50 ppm for people working an eight-hour shift.
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【单选题】—I forgot to bring my English book. May I use yours? —_______. [     ]
A.
I don't know
B.
you can't
C.
Here you are
D.
No, you can ask him
查看完整题目与答案
【单选题】He forgot about ______ him to attend my wife's birthday party.
A.
I asking
B.
my asking
C.
me to ask
D.
mine to ask
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【简答题】目前有( )和FedEx服务商支持快递门到门服务。
查看完整题目与答案
【简答题】连续时间信号的自变量通常以什么表示?离散时间信号的自变量以什么表示?自变量的取值上有什么区别?
查看完整题目与答案
【判断题】涂膜的硬度与其干燥程度有关,一般来说,涂膜干燥越彻底,硬度越低。
A.
正确
B.
错误
查看完整题目与答案
【判断题】Node.js的server对象是用net.createServer()函数来创建的。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Each hemoglobin can bind ______ oxygen molecules
A.
2
B.
3
C.
4
D.
6
查看完整题目与答案
【单选题】Staphylococcus aureus is a pathogenic bacterium that can infect a wide range of host species, including humans. S. aureus has a particular protein that binds with hemoglobin from the host organism. He...
A.
Each host transcribes and translates this gene differently.
B.
S. aureus develops a mutualistic relationship with each host species.
C.
Changes in amino acid sequence are unrelated to protein function.
D.
Each strain is best adapted to a specific host species.
查看完整题目与答案
相关题目：
【多选题】力矩是矢量,力 矩的三要素是( ) 。
A.
大小
B.
长度
C.
转向
D.
作用面
查看完整题目与答案
【单选题】Which of the following statements about carbon monoxide (CO) poisoning is wrong?
A.
CO, a colorless, odorless gas, is responsible for more than half of yearly deaths due to poisoning worldwide. In the United States alone, nearly 4,000 people succumb to CO poisoning each year, both accidentally and intentionally.
B.
CO has an approximately 2,500-fold greater affinity for hemoglobin than does oxygen. Consequently, relatively low levels of CO can have substantial and tragic effects.
C.
When CO combines with hemoglobin, the complex is referred to as carboxyhemoglobin, or COHb.
D.
In the United States, the government-mandated (Occupational Safety and Health Administration, OSHA) limit for CO at worksites is 50 ppm for people working an eight-hour shift.
查看完整题目与答案
【单选题】—I forgot to bring my English book. May I use yours? —_______. [     ]
A.
I don't know
B.
you can't
C.
Here you are
D.
No, you can ask him
查看完整题目与答案
【单选题】He forgot about ______ him to attend my wife's birthday party.
A.
I asking
B.
my asking
C.
me to ask
D.
mine to ask
查看完整题目与答案
【简答题】目前有( )和FedEx服务商支持快递门到门服务。
查看完整题目与答案
【简答题】连续时间信号的自变量通常以什么表示?离散时间信号的自变量以什么表示?自变量的取值上有什么区别?
查看完整题目与答案
【判断题】涂膜的硬度与其干燥程度有关,一般来说,涂膜干燥越彻底,硬度越低。
A.
正确
B.
错误
查看完整题目与答案
【判断题】Node.js的server对象是用net.createServer()函数来创建的。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Each hemoglobin can bind ______ oxygen molecules
A.
2
B.
3
C.
4
D.
6
查看完整题目与答案
【单选题】Staphylococcus aureus is a pathogenic bacterium that can infect a wide range of host species, including humans. S. aureus has a particular protein that binds with hemoglobin from the host organism. He...
A.
Each host transcribes and translates this gene differently.
B.
S. aureus develops a mutualistic relationship with each host species.
C.
Changes in amino acid sequence are unrelated to protein function.
D.
Each strain is best adapted to a specific host species.
查看完整题目与答案
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