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【单选题】
下列选项哪个不是缓和曲线的特征（ ）。A.
曲率不发生变化，便于车辆行驶
B.
离心加速度逐渐变化，旅客感觉舒适
C.
超高横坡度逐渐变化，行车更加平稳
D.
与圆曲线配合得当，增加线形美观
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反馈参考答案：
举一反三
【简答题】The systems include the fuel (supply) system, the lubrication system, the cooling system, the ignition system and the starting system.
【判断题】The funcation of the starting system is to make the engine start working.
A.
正确
B.
错误
【简答题】Identify the English names of the starting system according to the picture.
【单选题】【2014年计算机联考真题】下列程序段的时间复杂度是( )。 count t=0; for(k=1;k<=n;k*2) for(j=1;j<=n;j++) count++;
A.
O(log 2 n)
B.
O(n)
C.
O(nlog 2 n)
D.
O(n 2 )
【单选题】In the starting system, the automatic valve is controlled by , and the cylinder start valves are controlled by .
A.
pilot air; pilot air
B.
handle; solenoid
C.
handle; pilot air coming through the distributor
D.
solenoid; pilot air coming through the distributor
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