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【单选题】
急性溃疡性坏死性龈炎的主要致病菌为A.
溶血性链球菌
B.
白色念珠菌
C.
变形形菌
D.
金黄色葡萄球菌
E.
菱形菌及螺旋体
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反馈参考答案：
举一反三
【单选题】A semantic field is a meaning area where words share the same _____.
A.
pronunciation
B.
spelling
C.
concept
D.
tense
【单选题】where were the first coelacanth found?
A.
In Asia
B.
In South Africa
C.
In Atlantic
D.
In Paris
【单选题】According to Willcox, what is the key to Okinawan's healthy lives?
A.
reason for living
B.
wearing perfume
C.
regular exercise
D.
many more healthy nutrients
【多选题】下列关于绕线式感应电机(异步电机)的说法中,正确的是()
A.
绕线式感应电机（异步电机）和鼠笼式感应电机（异步电机）除转子结构不同外，其它部分结构基本一致
B.
绕线式感应电机（异步电机）的绕组使用Y型连接较多
C.
绕线式感应电机（异步电机）的绕组需要引出端头，而端头需要滑环，因此结构上比鼠笼型复杂
D.
绕线式感应电机（异步电机）正常工作时需要将绕组接电阻，而启动和调速的时候应该短路绕组
【简答题】JPG Scan the article and answer the following questions. 1. what Okinawan centenarians eat? 2. what Okinawan centenarians drink? 3. How Okinawan centenarians exercise? 4. How Okinawan centenarians rel...
【单选题】According to the speaker, where were the first bird's nests located
A.
On the ground.
B.
In cold places.
C.
On the highest branches of trees.
D.
Inside tree trunks.
相关题目：
【单选题】where were the first coelacanth found?
A.
In Asia
B.
In South Africa
C.
In Atlantic
D.
In Paris
参考解析：
知识点：
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