皮皮学，免费搜题
登录
搜题
【简答题】
某机修车间380V线路上接有如下用电设备： (1)小批量生产冷加工机床电动机：7kW有3台，4.5kW有8台，2.8kW有17台，1.7kW有10台。 (2)行车电动机：ε N =15%时铭牌容量为18kw，cosφ N =0.7共2台，互为备用。 (3)专用通风机：2.8kW有2台。 试分别用需要系数法、二项式法列表计算该车间的计算负荷。
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】Only then __________ how much damage had been caused. A．she realized B．she had realized C．had she realized D．did she realize
【单选题】Only then _____ how much damage had been caused.
A.
she realized
B.
She had realized
C.
had she realized
D.
did she realize
【单选题】It is never harmful _____ you to be polite and gentle to others and ______, as is often the case, you can get what you want. [ ]
A.
to; thus
B.
for; thus
C.
of; therefore
D.
with; however
【简答题】鱼的( )部位俗称“划水”,是鱼类运动和保持平衡的器官。
【单选题】Little ______ how happy I had been.
A.
she realized
B.
had she realized
C.
she had realized
D.
did she realize
【单选题】—I________as a cashier for 10 straight years, but I never had a sense of achievement. —Is that why you set up your own business?
A.
worked
B.
have been working
C.
would work
D.
have worked
【简答题】阅读短文，将其中划线部分的句子译成中文。 Yo-Yo Ma was born in Paris in 1955.He is Chinese but has never lived in China .He began to learn to play the cello (大提琴),when he was four years old .He became a cellist when he wa...
【简答题】实验四 简单查询.txt
相关题目：