皮皮学，免费搜题
登录
搜题
【单选题】
考虑到同步发电机在并车操作时可能因操作不当会出现短时逆功率，因而逆功率保护不要求一出现逆功率就瞬间跳闸，其动作值一般整（）额定功率，（）动作。A.
5%～10%／1～3s
B.
10%～15%／3～5s
C.
8%～15%／3～10s
D.
10%～20%／5～10s
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Health clubs have undergone a major transformation that can be described in three words: mind, body, and spirit. Loud, fast, heart-thumping aerobics has been replaced by the hushed tones of yoga and t...
A.
exercise is less important now than it once was.
B.
health clubs are much less popular now than they were ten years ago.
C.
many health clubs will go out of business because of the decline in traditional exercise.
D.
people's desire to nurture all aspects of themselves has contributed to big changes for health clubs.
【简答题】是决定一个国家长远的财政收入规模的基本因素
【简答题】A 3.2.2 Listen to the dialogue and fill in the blanks with the missing information. Serenading Service was founded 1______ ago when the singer realized that British people were 2______. He thought the...
【单选题】关于母乳性黄疸的特点,下列哪项是错误的
A.
多于生后3~8天出现黄疸
B.
1~3周达高峰
C.
胆红素在停止哺乳2~3天后即下降
D.
食欲差,体重下降
E.
继续哺乳1~3个月胆红素亦下降
【简答题】Juni Learning Juni is an online education program for kids that is targeting the $9 billion after-school market. The idea is to start with teaching kids computer science in a virtual, one-on-one setti...
【单选题】母乳性黄疸的特点,下列哪项是错误的( )
A.
多于生后4~7天出现黄疸
B.
血清胆红素可>342μmol/L(200mg/L)但尚无核黄疸报告
C.
胆红素在停止哺乳24~72小时后即下降
D.
胃纳差,体重不增
E.
继续哺乳1~4月胆红素亦降至正常
相关题目：
参考解析：
知识点：
题目纠错 0
发布
