皮皮学，免费搜题
登录
搜题
【单选题】
The main point of the first two paragraphs can best be illustrated as______.A.
when a machine like a rotary engine malfunctions, it is the technologist who is best equipped to repair it
B.
a telephone is a complex instrument designed by technologists using only nonverbal thought
C.
the designer of a new refrigerator should consider the designs of other refrigerators before deciding on its form
D.
the distinctive features of a suspension bridge reflect its designer's conceptualization as well as the physical requirements of its site
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
【单选题】电炉通电后,电炉丝热得发红,而跟电炉丝连接着的铜导线却不那么热,这是因为( )
A.
通过电炉丝的电流大，通过铜导线的电流小
B.
电炉丝中有电流的热效应，而铜导线中没有电流的热效应
C.
电炉丝的电阻比铜导线的电阻大得多
D.
炉丝的比热容比铜导线的比热容小
【单选题】滴定分析中化学计量点与滴定终点的关系是( )
A.
、化学计量点在滴定终点前
B.
、化学计量点在滴定终点后
C.
、两者越接近，滴定误差越大
D.
、两者越接近，滴定误差越小
【单选题】The model worker had ( ) thought of his own interests.
A.
the last
B.
less
C.
the least
D.
another
【单选题】The model worker had thought of his own interests.
A.
the last
B.
less
C.
the least
D.
the less
【单选题】The model worker had_____ thought of his own interests.
A.
another
B.
the last
C.
less
D.
the least
【单选题】The model worker had thought of his own interests.
A.
the last
B.
the least
C.
less
D.
another
【单选题】) 电炉通电后,电炉丝热得发红,而跟电炉连接的铜导线却不那么热,这是因为( )
A.
通过铜导线的电流小,所以它消耗的电能也较少
B.
电炉丝和铜导线消耗的电能相同,但铜导线散热快,所以就不那么热
C.
通过电炉丝的电流大,所以它消耗的电能较多
D.
铜导线电阻较小,所以它消耗的电能较少
【单选题】电炉通电后,电炉丝热得发红,而跟电炉连接的铜导线却不那么热,这是因为
A.
通过铜导线的电流小，所以它消耗的电能也较少
B.
电炉丝和铜导线消耗的电能相同，但铜导线散热快，所以就不那么热
C.
通过电炉丝的电流大，所以它消耗的电能较多
D.
铜导线电阻较小，所以它消耗的电能少
【简答题】如图甲、乙是“探究电流通过导体产生热量的多少跟什么因素有关”的实验装置,两个透明容器中密封着等量的空气。 (1)实验中,用_____反映密闭空气温度的变化 (2)图甲可探究电流产生的热量与_____的关系,通电一段时间后,_____(选填“左支“右”)侧容器中电阻产生的热量多。 (3)乙装置中的电阻R3的作用主要是_____。 (4)如果乙装置中R3发生了断路,在通电时问相间的情况下,与R3未发生...
相关题目：
【单选题】The model worker had thought of his own interests.
A.
the last
B.
less
C.
the least
D.
the less