问题
单项选择题
挖土机是常用的土方施工机械，正铲挖土机的挖土特点是（）。
A．前进向上，自重切土
B．后退向下，自重切土
C．前进向上，强制切土
D．后退向下，强制切土
答案
参考答案：C
解析：
[考点] 1A414021掌握主要土方机械施工的适用范围和施工方法．
搜题请搜索小程序“爱下问搜题”
挖土机是常用的土方施工机械，正铲挖土机的挖土特点是（）。
A．前进向上，自重切土
B．后退向下，自重切土
C．前进向上，强制切土
D．后退向下，强制切土
参考答案：C
解析：
[考点] 1A414021掌握主要土方机械施工的适用范围和施工方法．
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| I will never forget the days when I camped with my classmates last summer. Early in the morning after saying goodbye to our 1 , we got on the buses. More than two hours later, we 2 the campground. For us, it was the first time away from Mum and Dad. Some started to fell homesick (想家的) even before dark. 3 as the night party and dances began, the homesickness was gone. The next day, everyone rushed to the 4 class, At first, my friend and I worked 5 , but the boat wouldn't listen to us and kept going round and round (转个不停).T hen the boating teacher taught us 6 to work together. After many tries, we did better. Swimming was my favorite class. It was about one O'clock, the 7 time of a day and the best time to stay in the cool water, The swimming teacher was an interesting man.During class he often made us 8 happily. A week 9 . During the week I made many new friends and 10 learned to take care of myself without parents around me. | ||||
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