美国国家飞机标准(NAS)铆钉标识符号中,()表示除直径和长度以外铆钉的其他特性。
A.左上角
B. 右上角
C. 左下角
D. 右下角
A.左上角
B. 右上角
C. 左下角
D. 右下角
第4题
A.70 75
B.65 70
C.75 80
D.60 65
第5题
The U.S. Commerce Department has urged that the United States provide special support for its high-technology industries.It argues that these industries have the prospect of rapid future growth,provide inputs to many other industries.and generate technology that benefits the whole economy.Furthermore.some U.S. high-technology industries such as aircraft and microelectronics face challenges by government-supported foreign competitors.Which of these arguments might be valid reasons for the United States to have a policy targeting these industries?
第7题
A.领陆、领水、领空
B.我国的船舶、航空器
C.我国驻外使领馆
D.飞过我国境内的外国飞机
E.外国驻我国的使领馆
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