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【单选题】
关于人工挖土灌注桩施工方法的叙述中，下列说法不正确的是（）A.
不宜大于40m
B.
混凝土护壁厚度不宜小于100mm
C.
桩开挖深度超过20m时，应有专门下送风设备，风量不小于25L/s
D.
四周必须设置护栏，一般加0.8m高围栏维护
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举一反三
【单选题】---When are you going to travel to Beijing? ---The train ______ at six tomorrow morning, and I _______ for the station at four o’clock.
A.
leaves, leaves
B.
is going to leave, am going to leave
C.
is going to leave, leaves
D.
leaves, am going to leave
【单选题】按TSGT5001-2009《电梯使用管理与维护保养规则》规定，电梯维保单位应当建立每部电梯的维保记录，并且归入电梯技术档案，档案至少保存（）年。
A.
2
B.
3
C.
4
D.
5
【单选题】—Are you going to Beijing _____ plane? —No. I'm going there _____ a train. It takes only four hours. [ ]
A.
by, by
B.
by, on
C.
on, on
D.
on, by
【简答题】What is the first problem? ______.
【单选题】---Do you prefer _______ to Beijing by air? ---I would rather _______ a train.
A.
going, to take
B.
going, to take
C.
to go, take
D.
to go, to take
【简答题】What is the second problem? ______.
【单选题】.--- Robert, you didn’t travel by train? --- I was going to, but then I decided to go by car______.
A.
yet
B.
either
C.
instead
D.
indeed
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