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【单选题】
在进行坡口平焊时,钢垫板宽度应大干钢筋直径10mm.V形坡口角度宜为( )。A.
30°
B.
45°
C.
35°-45°
D.
55°-65°
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【单选题】____________ 查看材料
A.
But he never considered staying on his father and grandfather's land.
B.
While most people buy food from the big supermarkets， hundreds of independent Farmers' Markets are becoming popular.
C.
While confident they will succeed， she lists farming's many challenges
D.
Young people prefer to live in cities.
E.
I seriously objected to the super-sizing of everything——what exactly do they put on our apples to make them so big and red?
F.
'Buy British' campaigns urge （ 鼓励 ） consumers not to buy cheaper imported foods.
【单选题】某基础长 4.8m, 宽 3m, 埋深 1.8m, 基底平均压力 p=170kPa, 地基土为黏土, ,地基土平均自重应力所对应的孔隙比 , 压缩系数 , 基底下1.2m处为不可压缩的岩层。则计算基础的最终沉降量与下列哪个值更接近( )。
A.
2.3cm
B.
2.8cm
C.
8.2cm
D.
12.2cm
【单选题】I ______ her, but I never could.
A.
ought to help
B.
must help
C.
ought to have helped
D.
must have helped
【单选题】It must never be forgotten ______ the master has no authority to take extraordinary measures for the cargo owner if the latter or his representative can be communicated with．
A.
where
B.
that
C.
which
D.
whether
【单选题】Users must never give their password to ______ over the computer network, no matter how official the request appears.
A.
everyone
B.
anyone
C.
other
D.
nobody
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