皮皮学，免费搜题
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搜题
【单选题】
关于促癌剂的特点,不正确的是( )
A.
单独染毒无致癌性
B.
必须在启动之后才发挥作用
C.
通常有诱变性
D.
可能影响致癌物的代谢
E.
在启动之前使用不能增强致癌作用
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皮皮学刷刷变学霸
举一反三
【判断题】齿轮泵是容积式泵的一种类型。
A.
正确
B.
错误
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【单选题】Among the endogenous factors listed below, which is NOT an endogenous anticoagulant?
A.
Protein C
B.
Protein S
C.
ATIII
D.
Tissue factor
查看完整题目与答案
【简答题】下图为花的结构模式图,请回答下列问题。(横线上填名称,方括号【】内填编号) 解剖一朵花,由下往上,从外向内的结构依次是花柄、花托、花萼、花冠、_____________、_____________。 很多植物的花冠有鲜艳的色彩,除了具有保护作用外,还有_____________的作用。 图中的胚珠是【 】,完成受精作用后,胚珠发育成_____________,【 】发育成果实。 ...
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【单选题】19亚洲第一大跨国瀑布是( )
A.
蛟龙瀑布
B.
德天瀑布
C.
诺日瀑布
D.
壶口瀑布
查看完整题目与答案
【单选题】Among the following four sentences, which is not a statement of generalization?( )
A.
Democracy is a state of mind
B.
A number of foreign countries were directly involved in U.S. territorial expansion.
C.
Students should not be allowed to smoke in the classroom.
D.
A wild stallion is powerful and fierce
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【多选题】金融市场利率的决定因素除了资本的时间价值外,还包括( )。
A.
 通货膨胀补偿率
B.
流动性风险报酬率
C.
期限风险报酬率
D.
违约风险报酬率
查看完整题目与答案
【单选题】Among the following statements, which is tree about sea horse?
A.
The sea horse has a long snout that is not convenient for sucking.
B.
Sea horses have no scales at all.
C.
The sea horse is unable to grasp sea grass or coral.
D.
Sea horse can move very fast over long distance.
查看完整题目与答案
【简答题】按要求填空 ①写出下列物质的化学式：氨气 ；氧化铜 ； ②写出下列反应的化学反应式： a、高锰酸钾加热 ； b、二氧化碳通入澄清石灰水 ；
查看完整题目与答案
【单选题】What does the example of the smallpox vaccine illustrate?
A.
The way that vaccines protect people from diseases.
B.
The effectiveness of vaccines in eradicating certain diseases.
C.
The practical use of a vaccine to control an epidemic disease.
D.
The possible negative outcome of administering vaccines.
查看完整题目与答案
【单选题】The researchers were disappointed because ______.
A.
the vaccines haven't shown any effect on volunteers in Thailand
B.
the vaccines didn't stop the HIV infection on those who were vaccinated
C.
the vaccines were strongly rejected by the people in Thailand
D.
the vaccines' effects is waiting to be verified at conference in Paris
查看完整题目与答案
相关题目：
【判断题】齿轮泵是容积式泵的一种类型。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Among the endogenous factors listed below, which is NOT an endogenous anticoagulant?
A.
Protein C
B.
Protein S
C.
ATIII
D.
Tissue factor
查看完整题目与答案
【简答题】下图为花的结构模式图,请回答下列问题。(横线上填名称,方括号【】内填编号) 解剖一朵花,由下往上,从外向内的结构依次是花柄、花托、花萼、花冠、_____________、_____________。 很多植物的花冠有鲜艳的色彩,除了具有保护作用外,还有_____________的作用。 图中的胚珠是【 】,完成受精作用后,胚珠发育成_____________,【 】发育成果实。 ...
查看完整题目与答案
【单选题】19亚洲第一大跨国瀑布是( )
A.
蛟龙瀑布
B.
德天瀑布
C.
诺日瀑布
D.
壶口瀑布
查看完整题目与答案
【单选题】Among the following four sentences, which is not a statement of generalization?( )
A.
Democracy is a state of mind
B.
A number of foreign countries were directly involved in U.S. territorial expansion.
C.
Students should not be allowed to smoke in the classroom.
D.
A wild stallion is powerful and fierce
查看完整题目与答案
【多选题】金融市场利率的决定因素除了资本的时间价值外,还包括( )。
A.
 通货膨胀补偿率
B.
流动性风险报酬率
C.
期限风险报酬率
D.
违约风险报酬率
查看完整题目与答案
【单选题】Among the following statements, which is tree about sea horse?
A.
The sea horse has a long snout that is not convenient for sucking.
B.
Sea horses have no scales at all.
C.
The sea horse is unable to grasp sea grass or coral.
D.
Sea horse can move very fast over long distance.
查看完整题目与答案
【简答题】按要求填空 ①写出下列物质的化学式：氨气 ；氧化铜 ； ②写出下列反应的化学反应式： a、高锰酸钾加热 ； b、二氧化碳通入澄清石灰水 ；
查看完整题目与答案
【单选题】What does the example of the smallpox vaccine illustrate?
A.
The way that vaccines protect people from diseases.
B.
The effectiveness of vaccines in eradicating certain diseases.
C.
The practical use of a vaccine to control an epidemic disease.
D.
The possible negative outcome of administering vaccines.
查看完整题目与答案
【单选题】The researchers were disappointed because ______.
A.
the vaccines haven't shown any effect on volunteers in Thailand
B.
the vaccines didn't stop the HIV infection on those who were vaccinated
C.
the vaccines were strongly rejected by the people in Thailand
D.
the vaccines' effects is waiting to be verified at conference in Paris
查看完整题目与答案