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【单选题】
气动差压变送器的压力输出范围是?A.
0～0.02MPa
B.
0.02～0.1MPa
C.
0～0.1MPa
D.
0.02～0.14MPa
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举一反三
【单选题】在导线计算时，坐标增量闭合差fx=-0.08m、fy=+0.07m，导线总边长为475.74m，则导线全长相对闭合差为（ ）。
A.
1/4400
B.
1/2000
C.
1/440000
D.
1/5400
【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】Unfortunately, when I arrived she ______, so we only had time for a few words.
A.
just left
B.
has just left
C.
was just leaving
D.
had just left
【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】---Is that Bruce speaking? ---Sorry, he is out. He _______abroad on business.
A.
has gone
B.
has been
C.
went
D.
goes
【简答题】A．He was sorry they could never play ball together. B．He was sorry he could never tell story to him. C．He was sorry he was too old to play basketball and stuff. D．He was sorry that he was too occupied...
【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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