皮皮学,免费搜题
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【单选题】
新能源的发展正是起源于
A.
风能
B.
第二次世界大战
C.
石油危机
D.
工业革命
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【单选题】'Did you go to Belgium last year when you were on a business trip to Europe?' 'No, ______ there'
A.
I have never gone
B.
I never did
C.
I've never been
D.
I never was
【判断题】期货交易的盈亏结算就是指对持仓盈亏进行结算。
A.
正确
B.
错误
【判断题】双线头螺纹的导程和螺距相等。
A.
正确
B.
错误
【单选题】____ you _____ to go to the park when you were children?
A.
Did, use   
B.
Did, used    
C.
Do, used
【简答题】一般闭式软齿面齿轮传动中的主要失效形式是齿根折断和 。
【简答题】When did the boys put up their tent?
【判断题】酶在食品加工中用途很广,但因不耐热,不宜在焙烤食品加工中使用。
A.
正确
B.
错误
【简答题】阅读对话回答问题。 Amy: Where did you go on your holiday? Mike: I went to Harbin. Amy: When did you go there? Mike: I went there last weekend. Amy: What did you do? Mike: We made a snowman, went skating and bo...
【判断题】餐饮业属于制造业,因为其为客户制作菜肴。
A.
正确
B.
错误
【简答题】When did two of the boys wake up?