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【单选题】
直流电弧焊时,产生热量最多的是:A.
阳极区
B.
阴极区
C.
弧柱区
D.
热影响区
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】用have或has填空。 1. He _____ a new friend. 2. We _____ some photos. 3. Jim _____ lunch at 12:00. 4. Does she _____ a nice volleyball? 5. Tom's father _____ a new car. 6. They don't _____ many rulers.
【单选题】He has been blackmail ing me for months with some photos.
A.
黑邮
B.
邮寄
C.
匿名邮件
D.
敲诈勒索
【单选题】煤的元素分析成分中收到基碳是______。 A．固定碳 B．焦炭 C．碳化物中的碳 D．由固定碳和碳化物中碳组成
A.
煤的元素分析成分中收到基碳是______。 A.固定碳
B.
焦炭
C.
碳化物中的碳
D.
由固定碳和碳化物中碳组成
【单选题】The newspaper photographer ______ great delight in taking photos of famous people; whenever he has taken an unusual photo of a great person, he _______ feel delighted. [ ]
A.
takes; would
B.
has ; will
C.
takes; will
D.
makes; always
【简答题】“铜枝铁干”象征____。
【单选题】He is taking ______ now.
A.
a lots of photo
B.
lots of photos
C.
a lot of photoes
D.
much photos
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