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【单选题】
Please note that our offer remains _____ until the end of this week and we look forward to your order.A.
fine
B.
valid
C.
best
D.
confirm
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【单选题】______ , known as 'the City of Angels', is the second largest city in the United States.
A.
Chicago
B.
Boston
C.
Los Angeles
D.
San Francisco
【简答题】某导线全长789.78米，纵横坐标增量闭合差分别为-0.02米、0.09米，则导线全长相对闭合差为（）。
【单选题】某导线全长789.78米,纵横坐标增量闭合差分别为-0.21米. 0.19米,则导线相对闭合差为( )
A.
1/2789
B.
0.28米
C.
1/2000
D.
3.6E-4
【单选题】某导线全长789.78米，纵横坐标增量闭合差分别为-0.21米、0.19米，则导线相对闭合差为（）。
A.
1/2800
B.
0.28米
C.
1/2000
D.
0.00036
【简答题】( )是实现有夹角和相对位置经常发生变化的两轴之间的动力传递。
【单选题】The city of ______ , which was formerly known as Port Jackson, is the place of theearliest colonial settlement in Australia.
A.
Melbourne
B.
Sydney
C.
Perth
D.
Darwin
【单选题】Which city is known as 'City of Sails'?
A.
Auckland.
B.
Edinburgh.
C.
Melbourne.
D.
Perth.
【单选题】This city is ______ its beautiful sights.
A.
famous for
B.
well- known as
C.
known to
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