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【单选题】
关于表面结构要求的标注,下面说法不正确的是()A.
表面结构图形符号一般注于可见轮廓线、尺寸界线、引出线或者它们的延长线上
B.
符号的尖端必须从材料外指向零件表面
C.
可以将使用较多的一种符号统一注在图样的标题栏附近
D.
表面结构参数数值一律方向向上
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【单选题】I don’t think Jim saw me , he ________ into space.
A.
just stared
B.
was just staring
C.
has just stared
D.
had just stared
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【简答题】第三部分 第一节 完形填空 It had been a long time since I had been to Jacksonville Florida. I had driven to town ___41___ to find the old barber shop where my hair had been cut as a child. As I ___42___ around, ...
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