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【单选题】
单选(2分)有一台测量仪表,其标尺测量范围为0—500KPa,已知绝对误差最大值为4KPa,其灵敏度等级为多少级?A.
0.8
B.
0.5
C.
1
D.
1.5
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【单选题】Thecostoftheairfareishigherthan________.A.the rail fareB.that of the rail fare###
A.
The cost of the air fare is higher than________. A.the rail fare
B.
that of the rail fare
C.
those of the rail fare
D.
which of the rail fare
【单选题】5 bullhead rail / flat bottom rail B. A ____________________ has a foot and head that are roughly even.
A.
bullhead rail
B.
flat bottom rail
【单选题】If we work hard with a strong will, we _____ overcome any difficulty, however great it is．
A.
must
B.
need
C.
should
D.
can
【单选题】The cost of the air fare is higher than ______.
A.
the rail fare
B.
that of the rail fare
C.
those of the rail fare
D.
which of the rail fare
【单选题】Large cities prefer light rail to 'heavy' rapid-rail systems because light rail requires less construction material.
A.
Y
B.
N
C.
NG
【简答题】However, the rail network is not nearly as extensive as ___________ in most countries。
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