皮皮学，免费搜题
登录
搜题
【单选题】
关于船舶同步发电机正常自励起压的条件,下列说法不正确的是______。A.
发电机必须有足够的剩磁
B.
剩磁的极性与励磁绕组所要求的极性相反
C.
适当整回路阻抗，使励磁特性曲线与空载特性曲线交于空载额定电压处
D.
剩磁的极性与励磁绕组要求的极性要一致
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】In this part, you are required to write a composition entitled On Sustainable Development in China in no less than 200 words. Your composition should be based on the following outline: 1. The definiti...
【单选题】Sustainable development is the one that meets the needs of the present without ______ the ability of future generations to meet their own needs.
A.
compromising
B.
reinforcing
C.
lowering
D.
exhausting
【简答题】持久竞争优势(Sustainable Competitive Advantage)
【单选题】What is the most logical relationship between a sustainable competitive advantage and an organizational strength?
A.
A sustainable competitive advantage is a strength that is difficult for competitors to imitate
B.
A strength cannot be duplicated while a sustainable competitive advantage is easily copied
C.
Every strength leads to a sustainable competitive advantage
D.
Every sustainable competitive advantage leads to a strength
【简答题】The purpose of the Decade of Education for Sustainable Development is to ensure that education may help to ______.
相关题目：