皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【单选题】
下表是某些农作物生长最适宜的pH范围： 农作物 茶 甜菜 小麦 大豆 pH 4.5～5 7～7.5 6.2～7.5 6.5～7.5 某地区的土壤呈弱碱性，你认为该地区最不适宜种植的农作物是
A.
茶
B.
甜菜
C.
小麦
D.
大豆
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【单选题】单相半波可控整流电路电感性负载接续流二极管,a=90。时,输出电压砜为( )。
A.
0.45U2
B.
0.9U2
C.
0.225U2
D.
1.35U2
查看完整题目与答案
【单选题】单相半波可控整流电路电感性负载接续流二极管，a=900时，输出电压Ud为( )
A.
0.45U2
B.
0.9U2
C.
0.225U2
D.
1.35U2
查看完整题目与答案
【单选题】When a tornado moves over the water from land it is called a（）.
A.
Tornado
B.
Waterspout
C.
Hurricane
D.
Cyclone
查看完整题目与答案
【单选题】Anna says sally is ____ in the world.
A.
The kindest girl
B.
Kindest girl
C.
Most kind girl
D.
The most kind girl
查看完整题目与答案
【单选题】When the tutor asks Anna Maria about taking a maths option, she says ______.
A.
she wants to take one because she was good at maths at school
B.
she doesn't want to take one because she feels confident in maths
C.
she doesn't want to take one because she doesn't need maths
查看完整题目与答案
【简答题】One of Anna’s friends has chickenpox(水痘). Two days later, Katie has chickenpox. Anna’s mother says: “ Your best friend has chickenpox . We have to keep an eye on you.” The next evening, Anna finds som...
查看完整题目与答案
【简答题】单相半波可控整流电路电感性负载接续流二极管,α=90°时,输出电压Ud为( )。
查看完整题目与答案
【单选题】单相半波可控整流电路电感性负载接续流二极管.a-90 . 时.输出电压U d 为( ).
A.
0.45U 2
B.
0.9U 2
C.
0.225U 2
D.
1.35U 2
查看完整题目与答案
【单选题】单相半波可控整流电路电感性负载接续流二极管,α=°时,输出电压Ud为()。
A.
0.45U2
B.
0.92
C.
0.225U2
D.
1.35U2
查看完整题目与答案
【单选题】在网络传输中,传输速度最快、最安全的传输介质是( )
A.
光导纤维
B.
基带同轴电缆
C.
双绞线
D.
以上都不是
查看完整题目与答案
相关题目：
【单选题】单相半波可控整流电路电感性负载接续流二极管,a=90。时,输出电压砜为( )。
A.
0.45U2
B.
0.9U2
C.
0.225U2
D.
1.35U2
查看完整题目与答案
【单选题】单相半波可控整流电路电感性负载接续流二极管，a=900时，输出电压Ud为( )
A.
0.45U2
B.
0.9U2
C.
0.225U2
D.
1.35U2
查看完整题目与答案
【单选题】When a tornado moves over the water from land it is called a（）.
A.
Tornado
B.
Waterspout
C.
Hurricane
D.
Cyclone
查看完整题目与答案
【单选题】Anna says sally is ____ in the world.
A.
The kindest girl
B.
Kindest girl
C.
Most kind girl
D.
The most kind girl
查看完整题目与答案
【单选题】When the tutor asks Anna Maria about taking a maths option, she says ______.
A.
she wants to take one because she was good at maths at school
B.
she doesn't want to take one because she feels confident in maths
C.
she doesn't want to take one because she doesn't need maths
查看完整题目与答案
【简答题】One of Anna’s friends has chickenpox(水痘). Two days later, Katie has chickenpox. Anna’s mother says: “ Your best friend has chickenpox . We have to keep an eye on you.” The next evening, Anna finds som...
查看完整题目与答案
【简答题】单相半波可控整流电路电感性负载接续流二极管,α=90°时,输出电压Ud为( )。
查看完整题目与答案
【单选题】单相半波可控整流电路电感性负载接续流二极管.a-90 . 时.输出电压U d 为( ).
A.
0.45U 2
B.
0.9U 2
C.
0.225U 2
D.
1.35U 2
查看完整题目与答案
【单选题】单相半波可控整流电路电感性负载接续流二极管,α=°时,输出电压Ud为()。
A.
0.45U2
B.
0.92
C.
0.225U2
D.
1.35U2
查看完整题目与答案
【单选题】在网络传输中,传输速度最快、最安全的传输介质是( )
A.
光导纤维
B.
基带同轴电缆
C.
双绞线
D.
以上都不是
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题