塌陷是指更大范围内地面高程明显下降(沉陷)的现象。

题型:判断题

问题:

塌陷是指更大范围内地面高程明显下降(沉陷)的现象。

考点:河道修防与防冶工堤防工程堤防工程题库
题型:判断题

在加工盲孔时为了得到精确的孔深,可采用()。

A.G81

B.G82

C.G76

D.G83

题型:判断题

随着分子中碳原子数的增多,烯烃的()增大。

A、沸点和密度

B、沸点和凝固点

C、粘度和密度

D、粘度和凝固点

题型:判断题

I was a single parent of four small children, working at a low paid job. Money was always tight, but we had a (1) over our heads, food on the table, clothes on our backs, and if not a lot, always (2) . Not knowing we were poor, my kids just thought I was (3) . I’ve always been glad about that.

It was Christmas time, and although there wasn’t (4) for a lot of gifts, we planned to celebrate with a family party. But the big (5) for the kids was the fun of Christmas (6) .

They planned weeks ahead of time, asking (7) what they wanted for Christmas. Fortunately, I had saved MYM120 for (8) to share by all five of us.

The big (9) arrived. I gave each kid a twenty-dollar bill and (10) them to look for gifts of about four dollars each. Then everyone scattered. We had two hours to shop; then we would (11) back at the "Santa’s Workshop"

Driving home, everyone was in high Christmas spirits, (12) my younger daughter, Ginger, who was unusually (13) She had only one small, flat bag with a few candies—fiftycent candies I was so angry, but I didn’t say anything (14) we got home. I called her into my bedroom and closed the door, (15) to be angry again. This is what she told me.

"I was looking (16) thinking of what to buy, and I (17) to read the little cards on the ’Giving Trees’. One was for a little girl, four years old, and all she (18) for Christmas was a doll. So I took the card off the tree and (19) the doll for her. We have so much and she doesn’t have anything. "

I never felt so (20) as I did that day.

12()。

A.toys 

B.clothes 

C.presents 

D.bills

题型:判断题

纪律作为一种行为规则,它是以()为前提的,因而具有强制性和约束性。

题型:判断题

关于食管蠕动的叙述,错误的是

A.第一蠕动波又称为原发蠕动
B.第二蠕动波又称为继发蠕动
C.第三收缩波是非推进性蠕动
D.第一蠕动波由吞咽动作诱发
E.第二蠕动波起始于剑突水平

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