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【单选题】
用前方交会法测定桥墩中心位置时，对误差三角形的要求是( )A.
接近直角三角形为好
B.
接近正三角形为好
C.
两个边的长度接近相等为好
D.
长边与短边的差别不大为好
E.
最大边的长度不超过规定
F.
最大角的角度不超限
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举一反三
【多选题】The costs of product usually consist of：
A.
Material costs
B.
Labor costs
C.
Distribution costs
D.
Marketing costs
【单选题】A.The costs for it are usually higher.B.It cant be fulfilled without computer.#
A.
The costs for it are usually higher.
B.
It cant be fulfilled without computer.
C.
People cant study at their own pace.
D.
There are no face-to-face communications.
【多选题】The costs of product usually consist of：
A.
Material costs
B.
Labour costs
C.
Distribution costs
D.
Marketing costs
【单选题】Some audience complain that it usually __________ too long to watch the ads during TV series.
A.
costs
B.
spends
C.
takes
D.
spares
【多选题】The costs of a product usually consist of:
A.
material costs
B.
labor costs
C.
distribution costs
D.
marketing costs
【简答题】共集电极放大电路又叫 ______ ,其电路特点为: ______ ,输出电压与输入电压 ______ ,输入电阻 ______ ,输出电阻 ______ 。由于它的这些特点,该电路常常被用作多级放大电路的 ______ 、 ______ 或 ______ 。
【简答题】电控燃油喷射( EFI)主要包括喷油量,喷射正时,燃油停供和( )的控制
【多选题】The costs of product usually consist of:( )
A.
Labor costs
B.
Material costs
C.
Distribution costs
D.
Marketing costs
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