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【单选题】
泡沫混合液立设置的控制阀，其安装高度一般在（ ）之间，并需要设置明显的启闭标志；当控制阀的安装高度大于1．8m时，需要设置操作平台或操作凳。A.
1．1～1．5m
B.
1．1～1．6m
C.
1．2～1．5m
D.
1．2～1．8m
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皮皮学刷刷变学霸
举一反三
【单选题】关于脊柱的说法,错误的是
A.
由24快椎骨连接而成
B.
有颈曲、胸曲、腰曲和骶曲四个生理性弯曲
C.
后韧带连接于椎体和椎间盘的后面
D.
连接相邻两个椎体的纤维软骨盘称椎间盘
E.
黄韧带协助围成椎管
【单选题】Mrs Smith thought her children went to the movies ______, they went to the zoo.
A.
in general
B.
or rather
C.
on the contrary
D.
so to speak
【单选题】---Oh, doctor, the wound on my leg is infected. ---You really shouldn’t have left it _______ to the sun.
A.
discovered
B.
exposed
C.
opened
D.
buried
【简答题】Which of the six children went to Cowan Bridge School?
【单选题】—Oh, doctor, The wound on my leg is infected. —You really shouldn’t have left it _______ to the sun.
A.
discovered
B.
exposed
C.
opened
D.
buried
【单选题】水平放置的带电平行板电容器两板间,悬浮着一个带负电的微粒,着从微粒取走一热负电荷(质量不变),为使它仍能悬浮,应该( )。
A.
城小两板正对面积
B.
增大两板的正对面积
C.
使两板靠近些
D.
使两板分开些
【单选题】The children went there to watch the iron tower ____.
A.
to erect
B.
be erected
C.
erecting
D.
being erected
【单选题】Woman: Wally, the necklace is beautiful, but really, you shouldn't have! Man: You're welcome. I think it looks beautiful on you. Question: What did Wally do for the woman?
A.
He bought her a necklace.
B.
He helped her put on the necklace.
C.
He helped her choose a necklace.
D.
He tried to flatter her.
【单选题】－ I was really anxious about you. You shouldn't have left without a word. － _____. [ ]
A.
why not?
B.
Really?
C.
I don't know
D.
I'm terribly sorry
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