皮皮学，免费搜题
登录
搜题
【简答题】
根据下列数据，绘出概略的A-B二元相图。已知A组B组较高的熔点，B在A中没有溶解度，该合金系存在下列恒温转变： ①700℃    L(ωB=70%)+A→β(ωB=60%) ②600℃    β(ωB=55%)+A→γ(ωB=30%) ③500℃    L(ωB=95%)+β(ωB=75%)→α(7ωB=90%) ④300℃    β(ωB=65%)→α(ωB=85%)+γ(ωB=50%)
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】A biome is a major biotic community characterized by the dominant forms of plant life and the prevailing climate. It is a major ecological community, extending over a large area and usually characteri...
查看完整题目与答案
【多选题】The major technical features of the pit fields method are _________.
A.
Instead of plowing every inch of land, only the pits are dug deeply and then plowed.
B.
It’s mainly applied in large scale on big plains.
C.
The seeds are sowed with equal distance in the field and there are different rules for distance among seeds for different crops
D.
Dividing fields into smaller pits helps centralize the management of the field.
查看完整题目与答案
【单选题】保育员可以请家长(),以帮助幼儿学习穿脱衣服
A.
在衣服前片绣名字等使幼儿分清前后
B.
在衣服后片绣名字等使幼儿分清前后
C.
只给孩子买开襟衣服
D.
只给孩子买套头衣服
查看完整题目与答案
【单选题】The plot spans which period of time?
A.
1850-1885
B.
1900-1905
C.
1899-1910
D.
1910-1928
查看完整题目与答案
【多选题】百度图片搜索支持的图片格式有( )。
A.
JPEG
B.
GIF
C.
PNG
D.
BMP
查看完整题目与答案
【单选题】All of the following statements are true of the northern Great Plains EXCEPT
A.
Summer temperatures are very hot, while winter temperatures are very cold
B.
An unbroken prairie now extends from the western mountains to the eastern forest
C.
The original vegetation consisted of shortgrass, mixed grass, and tallgrass
D.
A large number of small wetlands are found throughout the region
查看完整题目与答案
【单选题】在七言诗的发展成熟阶段,以下哪首诗是写的最早的也是写的最好的作品?( )
A.
《石头城》
B.
《江南逢李龟年》
C.
《过清华宫绝句》
D.
《燕歌行》
查看完整题目与答案
【简答题】At the beginning of the 20th century there were more than a million lions worldwide. Today there are less than 30,000 in the wild. The remaining lions are increasingly threatened by habitat loss, hunt...
查看完整题目与答案
【多选题】百度图片搜索支持的图片格式有( )。
A.
JPEG
B.
GIF
C.
PNF
D.
BMP
查看完整题目与答案
【简答题】Have you ever seen the man in the moon? If you look closely at the moon on some nights, you can see the face of the man in the moon. Some people say that they can see an old man carrying sticks. 小题1: ...
查看完整题目与答案
相关题目：
【简答题】A biome is a major biotic community characterized by the dominant forms of plant life and the prevailing climate. It is a major ecological community, extending over a large area and usually characteri...
查看完整题目与答案
【多选题】The major technical features of the pit fields method are _________.
A.
Instead of plowing every inch of land, only the pits are dug deeply and then plowed.
B.
It’s mainly applied in large scale on big plains.
C.
The seeds are sowed with equal distance in the field and there are different rules for distance among seeds for different crops
D.
Dividing fields into smaller pits helps centralize the management of the field.
查看完整题目与答案
【单选题】保育员可以请家长(),以帮助幼儿学习穿脱衣服
A.
在衣服前片绣名字等使幼儿分清前后
B.
在衣服后片绣名字等使幼儿分清前后
C.
只给孩子买开襟衣服
D.
只给孩子买套头衣服
查看完整题目与答案
【单选题】The plot spans which period of time?
A.
1850-1885
B.
1900-1905
C.
1899-1910
D.
1910-1928
查看完整题目与答案
【多选题】百度图片搜索支持的图片格式有( )。
A.
JPEG
B.
GIF
C.
PNG
D.
BMP
查看完整题目与答案
【单选题】All of the following statements are true of the northern Great Plains EXCEPT
A.
Summer temperatures are very hot, while winter temperatures are very cold
B.
An unbroken prairie now extends from the western mountains to the eastern forest
C.
The original vegetation consisted of shortgrass, mixed grass, and tallgrass
D.
A large number of small wetlands are found throughout the region
查看完整题目与答案
【单选题】在七言诗的发展成熟阶段,以下哪首诗是写的最早的也是写的最好的作品?( )
A.
《石头城》
B.
《江南逢李龟年》
C.
《过清华宫绝句》
D.
《燕歌行》
查看完整题目与答案
【简答题】At the beginning of the 20th century there were more than a million lions worldwide. Today there are less than 30,000 in the wild. The remaining lions are increasingly threatened by habitat loss, hunt...
查看完整题目与答案
【多选题】百度图片搜索支持的图片格式有( )。
A.
JPEG
B.
GIF
C.
PNF
D.
BMP
查看完整题目与答案
【简答题】Have you ever seen the man in the moon? If you look closely at the moon on some nights, you can see the face of the man in the moon. Some people say that they can see an old man carrying sticks. 小题1: ...
查看完整题目与答案