2和3是一对互质数.______.
.2与3只有公因数1,
所以2和3是一对互质数.
故答案为:正确.
根据句意及汉语提示,补全单词
1. The flight landed at the airport (安全地).
2. When he saw the accident, he ran to see it (立即).
3. Was the girl (咬) by the dog?
4. My car (出故障) half the way.
5. I went to the Smith's (诊所), but he wasn't in.
预制梁(板)吊装中的墩龙门架架设法适用于( )。
A.平坦无水桥孔的中小跨径预制梁板安装
B.地面有水,孔数较多的中小跨径预制梁板安装
C.孔数较多的重型梁吊装
D.无水或浅水河滩,孔数较多的中型梁板安装