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【判断题】
有价值的商业活动并不全都是建立在契约精神基础上的协作行为。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Unfortunately when I arrived she ______, so we only had time for a few words.
A.
has just left
B.
just left
C.
had just left
D.
was just leaving
【单选题】一Was he sorry for what he’d done? 一 [ ]
A.
No wonder
B.
Well done
C.
Not really
D.
Go ahead
【单选题】Unfortunately, when I dropped in, Dr. Green ______, so we only had time for a few words.
A.
just left
B.
has just left
C.
had just left
D.
was just leaving
【单选题】Unfortunately, when I dropped in, Professor Smith ________, so we only had time for a few words.
A.
has just left
B.
had just left
C.
just left
D.
was just leaving
【单选题】—Amy , I would like your uncle to help me repair the computer. —Sorry, he _____help you today . He won’t come back until tomorrow.
A.
shouldn’t
B.
may not
C.
can’t
D.
mustn’t
【单选题】已知一导线全长为 330.01m ,进行内业计算时得到该导线的纵横坐标增量闭合差分别为 fx=+0.03m 和 fy=-0.04m ,则该导线全长闭合差 f 为 _______.
A.
-0.01m
B.
-0.05m
C.
0.05m
D.
0.07m
【单选题】导线测量中,按近似平差的原别,算得导线坐标增量闭合差fx=0.052m,fy=0.042导线全长∑D=2109.214m,那么导线全长相对闭合差为()。
A.
K=1／31555
B.
K=l／34045
C.
K=1／28450
D.
K=1/16657
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