问题
单项选择题
砂石桩施工的主要方法有（）。
A.水平振动加水冲
B.螺旋钻钻孔，锤击夯实桩体
C.水冲成孔，锤击夯实桩体
D.振动沉管和锤击沉管
答案
参考答案：D
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砂石桩施工的主要方法有（）。
A.水平振动加水冲
B.螺旋钻钻孔，锤击夯实桩体
C.水冲成孔，锤击夯实桩体
D.振动沉管和锤击沉管
参考答案：D
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| The parents of two boys (14 and 16 year-olds) went on a trip for the weekend with friends. They left early 1 Friday morning, and left the boys at home. That evening the boys 2 their dad's car to see a movie. They 3 a good time. After the movie 4 , they got back to the car. They saw a big hole ( 洞) at the 5 of the car. They were terrified ( 恐惧的) and asked 6 to fix ( 修理) the car. After that they drove it back home. Their parents came back on Sunday, but the boys didn't tell them about the hole 7 they were too terrified. The father went out in his 8 . When he came back, he was 9 and said to the family, "Someone drove 10 the back of my car on Thursday and now it is fixed well!" | ||||
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