皮皮学，免费搜题
登录
搜题
【简答题】
光纤由 , 和 构成。
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】患者，女，56岁，咳喘，伴有形寒背冷，痰多清稀，平素怕冷，时常出现腹泻，脘腹冷痛，舌质淡，脉沉细。宜首选的药物是( )
A.
肉桂
B.
附子
C.
干姜
D.
小茴香
E.
丁香
【简答题】根据《节能与新能源汽车产业发展规划( 2012 ― 2020 年)》所指新能源汽车主要包括( )汽车、插电式混合动力汽车及( )汽车。
【单选题】Which of the following conclusions about the Grand Canyon can be drawn from the passage?
A.
Its contours are constantly changing.
B.
It contains approximately 14 million tons of rock.
C.
Its eruptions have increased in recent years.
D.
It is being eroded by toxic waste and pollutants.
【单选题】Which of the following conclusions can be logically drawn from the passage?
A.
The south lost the war partly because it lacked popular support.
B.
The economy of the south was flexible enough to support the war efforts.
C.
The North owed its victory partly to the adjustability of its economy.
D.
The economic structure in the North hindered the logistics of the army.
【多选题】Which one can be used as conclusions()
A.
Summarize the main points
B.
End with a quotation
C.
Inspire or challenge
D.
Demonstrate concrete results
【单选题】According to the passage, we can draw the conclusions except that
A.
the production efficiency has greatly been improved by the 'American System'.
B.
many other machines such as refrigerators, washing machines and vacuum cleaners are produced on the assembly line.
C.
with the interchangeable parts, American industries advanced greatly.
D.
the industrial managers began the careful study of the operations with the aim of reducing the methods.
相关题目：