皮皮学，免费搜题
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【单选题】
从设备初投资的角度看,他励直流电动机的调速方法中,投资最大的是:A.
串电阻调速
B.
减弱磁通调速
C.
降低电源电压调速
D.
励磁回路串电阻调速
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Did you buy ______? [ ]
A.
something else
B.
else something
C.
anything else
D.
else anything
【单选题】Though she did not wish for a medical profession, Miriam did not say anything and _______ to her parents' wishes.
A.
acquiesced
B.
consent
C.
assented
D.
acceded
【单选题】— _____ you buy _____ in the store？ — Yes, I did. [ ]
A.
Did ; something
B.
Did ; anything
C.
Do ; something
D.
Do ; anything
【单选题】--Did you do _____ interesting yesterday? --Yes, ______.
A.
anything, I did
B.
anything, I was
C.
something, I did
D.
something, I was
【单选题】---Did you buy special? ---No ,I bought .
A.
something; anything
B.
anything ; something
C.
anything; nothing
D.
nothing; anything
【简答题】当垂向水量交换强度为 0 时,介绍其特定解及其水文地质含义。
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