皮皮学，免费搜题
登录
搜题
【单选题】
所有种类的毛虫都产生一种同样的称为“幼年荷尔蒙”的激素，这种激素维持了进食的行为。只有当毛虫生长到可以化蛹的大小时，一种特殊的酶才会阻止幼年荷尔蒙的产生。这种酶可以被合成，一旦被未成熟的毛虫吸收，就可以通过阻止毛虫进食而杀死它们。 下面哪项，如果正确，最强有力地支持了这种观点，即通过向农田喷洒上文提到的酶来灭除经历毛虫阶段的农业害虫是不可取的?
A.
大多数种类的毛虫被一些自然捕食行为吃掉了。
B.
许多农业害虫不经历毛虫阶段。
C.
许多对农业有益的昆虫也经历毛虫阶段。
D.
因为不同种类的毛虫出现在不同时期，必须进行若干次喷洒。
E.
虽然这种酶已经在实验室中被合成出来了，大规模的生产设备尚不存在。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【简答题】请根据视频内容将下列短语翻译成英文。 招待客户 看评论 有权享有 家的感觉/氛围 步行前往目的地 宾馆预定 网络连接 在非高峰期 靠近景点 个性化
查看完整题目与答案
【简答题】stress imaging
查看完整题目与答案
【简答题】Terms translation (短语翻译,请将下列短语翻译成英文!!) 中华文明
查看完整题目与答案
【单选题】What is the European Community's attitude toward stress?
A.
Stress is a disease that people should try to handle.
B.
Stress has great influence on working people's lives.
C.
Stress is one of the most serious occupational diseases.
D.
Stress is a major problem all the people face.
查看完整题目与答案
【单选题】Stress Stress can be defined as an adaptive response, mediated by individual characteristics and/or psychological processes, that is a consequence of any external action, situation, or event that plac...
A.
an individual's response to an external action
B.
a process of one's adaptation to the situation
C.
a demand an external situation places on a person
D.
physical and psychological demands on a person
查看完整题目与答案
【简答题】请将下列短语或词汇翻译成中文或英文 seasonal drop
查看完整题目与答案
【简答题】请将下列词组翻译成英语(请在短文中找答案)。 1.药品集中采购 2. 基本医疗保险 3. 取消 4. 公共医疗机构 5. 药品供应
查看完整题目与答案
【单选题】Post-traumatic stress is far from the only possible stress
A.
one could experience much more than post-traumatic stress
B.
The only thing to get from a hard experience is post-traumatic stress.
C.
Post-traumatic stress is a much stronger reaction than others
D.
Everyone who has gone through a profoundly disturbing experience will have post-traumatic stress
查看完整题目与答案
【简答题】______ is the maximum stress that can be sustained for a specified number of stress cycles without fracture. A) Fatiguelimit B) Fatigueratio C) Fatiguestrength D) Enduranceratio
查看完整题目与答案
【单选题】Which of the following is true concerning stress on managers?
A.
Stress only affects managers in times of change.
B.
Stress will always lead to the setting up of a vicious cycle.
C.
High level of stress may result in less effective performance.
D.
High level of stress occur as managers adjust to changes.
查看完整题目与答案
相关题目：
【简答题】请根据视频内容将下列短语翻译成英文。 招待客户 看评论 有权享有 家的感觉/氛围 步行前往目的地 宾馆预定 网络连接 在非高峰期 靠近景点 个性化
查看完整题目与答案
【简答题】stress imaging
查看完整题目与答案
【简答题】Terms translation (短语翻译,请将下列短语翻译成英文!!) 中华文明
查看完整题目与答案
【单选题】What is the European Community's attitude toward stress?
A.
Stress is a disease that people should try to handle.
B.
Stress has great influence on working people's lives.
C.
Stress is one of the most serious occupational diseases.
D.
Stress is a major problem all the people face.
查看完整题目与答案
【单选题】Stress Stress can be defined as an adaptive response, mediated by individual characteristics and/or psychological processes, that is a consequence of any external action, situation, or event that plac...
A.
an individual's response to an external action
B.
a process of one's adaptation to the situation
C.
a demand an external situation places on a person
D.
physical and psychological demands on a person
查看完整题目与答案
【简答题】请将下列短语或词汇翻译成中文或英文 seasonal drop
查看完整题目与答案
【简答题】请将下列词组翻译成英语(请在短文中找答案)。 1.药品集中采购 2. 基本医疗保险 3. 取消 4. 公共医疗机构 5. 药品供应
查看完整题目与答案
【单选题】Post-traumatic stress is far from the only possible stress
A.
one could experience much more than post-traumatic stress
B.
The only thing to get from a hard experience is post-traumatic stress.
C.
Post-traumatic stress is a much stronger reaction than others
D.
Everyone who has gone through a profoundly disturbing experience will have post-traumatic stress
查看完整题目与答案
【简答题】______ is the maximum stress that can be sustained for a specified number of stress cycles without fracture. A) Fatiguelimit B) Fatigueratio C) Fatiguestrength D) Enduranceratio
查看完整题目与答案
【单选题】Which of the following is true concerning stress on managers?
A.
Stress only affects managers in times of change.
B.
Stress will always lead to the setting up of a vicious cycle.
C.
High level of stress may result in less effective performance.
D.
High level of stress occur as managers adjust to changes.
查看完整题目与答案