问题
问答题 简答题
M16螺栓中的“M”和“16”分别指的是多少？
答案
参考答案：
M为特征代号；16为公称直径。
搜题请搜索小程序“爱下问搜题”
M16螺栓中的“M”和“16”分别指的是多少？
参考答案：
M为特征代号；16为公称直径。
| 完形填空。 | ||||
| Strange things happen to time when you travel, because the earth is divided into twenty - four parts, 1 a part. You can have days 2 more or fewer than twenty - four hours, and 3 with more or fewer than seven days. Your ship goes into 4 time part every day if you make a five - day journey across the Atlantic Ocean. As you go into each part, the time 5 one hour. Traveling west, you 6 your clock back; traveling east, you let it ahead. Each day of your jou rney has 7 twenty-five or twenty-three hours. If you travel by ship across the Pacific, you will 8 the International Date Line. This is the point where a new day _ 9 . When you go across the line, you change your calendar one 10 day, back or ahead. | ||||
|