板件对接组装时,应按规范和焊工技艺确定组对间隙,且终焊端比始焊端间隙略大。()

题型:判断题

问题:

板件对接组装时,应按规范和焊工技艺确定组对间隙,且终焊端比始焊端间隙略大。()

考点:电焊工中级电焊工中级
题型:判断题

数码相机是一种重要的图像输入设备,它具有如下特点: ①能够长时间拍摄三维景物的动态图像 ②从数码相机的I/O口能够直接将拍摄的图像输入到PC机 ③从数码相机的I/O口经过A/D转换处理后才能将拍摄的图像输入到PC机 ④拍摄照片时不需要胶卷和暗房其中正确的是( )。

A.①+②

B.②+③

C.①+④

D.②+④

题型:判断题

John likes     1   (read) very much. His father has a library and the boy    2    (read) most of the books in it. So he often    3    (borrow) books from the school library. He reads books when he    4    (be) free and does nothing but reading at home on Weekends. Once he even    5   (read) a novel in class because it was very interesting. Of course he couldn’t hear what the teacher    6   (say). So he    7    (fall) behind. The headmaster had a talk with him and told him    8   (not read) novels in class. At last, he realized that he was wrong and said “I’m sorry, I    9    (not do) it again.” And now he reads books after he finishes    10    (do) all his homework..

题型:判断题

十字头销孔的中心线对十字头磨擦面中心线的不垂直度,在()毫米长度上不大于()毫米。

题型:判断题

数控机床坐标系一般可分为()两大类。

题型:判断题

监理单位要根据与建设单位签订的( ),决定收集信息。

A.监理大纲
B.监理合同
C.监理实施细则
D.监理规划

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