皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【单选题】
复励电动机的励磁绕组有两组，一组与电枢绕组串联，另一组与电枢绕组并联；当两个绕组产生的磁通方向相反时，称为（ ?? ??）电动机。
A.
串励
B.
积复励
C.
并励
D.
差复励
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】The chief cause of loss for the nursery crops before marketed may be _____________ .
A.
desciccation during storage
B.
warming during storage
C.
lacks of cold-storage facilities at retail outlets
D.
all of the above
查看完整题目与答案
【单选题】纸蝴蝶书签的动力翅膀弯折的夹角是( )
A.
150°
B.
180°
C.
120°
查看完整题目与答案
【单选题】Which type of the nursery crops is spruce? _____________
A.
roses
B.
broad-leaved evergreens
C.
deciduous plants
D.
coniferous evergreens
查看完整题目与答案
【单选题】What plants are consiederd as a backbone of the nursery crops? _____________
A.
bulb crops
B.
ornamental shrubs
C.
ornamental trees
D.
fruit plants
查看完整题目与答案
【单选题】幼儿园工作规程明确指出,幼儿一日活动的组织应()注重幼儿的实践活动,保证幼儿愉快的有益的自由活动
A.
重点突出
B.
分清轻重缓急
C.
动静交替
D.
合理安排
查看完整题目与答案
【单选题】以下说法错误的是 ( )
A.
若一个二叉树的树叶是某子树的中序遍历序列中的第一个结点，则它必是该子树的后序遍历序列中的第一个结点
B.
已知二叉树的前序遍历和后序遍历序列并不能惟一地确定这棵树，因为不知道树的根结点是哪一个
C.
在前序遍历二叉树的序列中，任何结点的子树的所有结点都是直接跟在该结点的之后。
查看完整题目与答案
【单选题】Most nursery crops are _____________ .
A.
fruit plants
B.
perennial vegetables
C.
ornamentals
D.
Christmas trees
查看完整题目与答案
【单选题】What nursery crops is usually utilized on golf courses? _____________
A.
turf
B.
grasses
C.
ground covers
D.
lawn
E.
all of the above
F.
none of the above
查看完整题目与答案
【单选题】What is the environmental benefit of GM crops?
A.
Herbicidetolerant crops can reduce the use of chemicals.
B.
Herbicidetolerant crops can use milder chemicals.
C.
Bt genes can protect crops against insects instead of chemical pesticides.
D.
Insect-resistant crops only need a more benign mix of chemicals .
查看完整题目与答案
【简答题】What does the field grower of nursery crops purchase from some specialfirms for field plantings? _____________A. small plants started in plant bands B. slightlly larger ones in containers C. lining ou...
查看完整题目与答案
相关题目：
【单选题】The chief cause of loss for the nursery crops before marketed may be _____________ .
A.
desciccation during storage
B.
warming during storage
C.
lacks of cold-storage facilities at retail outlets
D.
all of the above
查看完整题目与答案
【单选题】纸蝴蝶书签的动力翅膀弯折的夹角是( )
A.
150°
B.
180°
C.
120°
查看完整题目与答案
【单选题】Which type of the nursery crops is spruce? _____________
A.
roses
B.
broad-leaved evergreens
C.
deciduous plants
D.
coniferous evergreens
查看完整题目与答案
【单选题】What plants are consiederd as a backbone of the nursery crops? _____________
A.
bulb crops
B.
ornamental shrubs
C.
ornamental trees
D.
fruit plants
查看完整题目与答案
【单选题】幼儿园工作规程明确指出,幼儿一日活动的组织应()注重幼儿的实践活动,保证幼儿愉快的有益的自由活动
A.
重点突出
B.
分清轻重缓急
C.
动静交替
D.
合理安排
查看完整题目与答案
【单选题】以下说法错误的是 ( )
A.
若一个二叉树的树叶是某子树的中序遍历序列中的第一个结点，则它必是该子树的后序遍历序列中的第一个结点
B.
已知二叉树的前序遍历和后序遍历序列并不能惟一地确定这棵树，因为不知道树的根结点是哪一个
C.
在前序遍历二叉树的序列中，任何结点的子树的所有结点都是直接跟在该结点的之后。
查看完整题目与答案
【单选题】Most nursery crops are _____________ .
A.
fruit plants
B.
perennial vegetables
C.
ornamentals
D.
Christmas trees
查看完整题目与答案
【单选题】What nursery crops is usually utilized on golf courses? _____________
A.
turf
B.
grasses
C.
ground covers
D.
lawn
E.
all of the above
F.
none of the above
查看完整题目与答案
【单选题】What is the environmental benefit of GM crops?
A.
Herbicidetolerant crops can reduce the use of chemicals.
B.
Herbicidetolerant crops can use milder chemicals.
C.
Bt genes can protect crops against insects instead of chemical pesticides.
D.
Insect-resistant crops only need a more benign mix of chemicals .
查看完整题目与答案
【简答题】What does the field grower of nursery crops purchase from some specialfirms for field plantings? _____________A. small plants started in plant bands B. slightlly larger ones in containers C. lining ou...
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