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【单选题】
钢管混凝土柱与螺旋筋柱的主要不同点是 ( )
A.
前者可不配钢筋
B.
施工方便
C.
钢管在纵向参与受压
D.
钢管对混凝土有侧限作用
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参考答案:
举一反三
【单选题】The electronic digital governor is virtually maintenance free. There are no moving parts to wear and the accuracy attainable is far ______ the mechanical governor.
A.
superior to
B.
inferior to
C.
superior than
D.
inferior than
【单选题】There are ____ principles and requirements we should follow by doing mechanical practice.
A.
5
B.
6
C.
7
D.
8
【单选题】恒转矩负载下,他(并)励电动机最好的机械特性是_______特性。
A.
调压调速
B.
转子串电阻调速
C.
转子串电感调速
D.
定子调磁场调速
【简答题】验收发电机时,检查其有无机械和电路故障,可采取()试验?When checking and accepting the generator, check whether there are mechanical and circuit faults. () test can be carried out.A. 负载loadB. 启动startC. 空转idlingD. 手动manual
【单选题】下列有关信号的说法错误的是?
A.
信号是消息的表现形式
B.
信号都可以用一个确定的时间函数来描述
C.
声音和图像都是信号
D.
信号可以分解为周期信号和非周期信号
【单选题】There are mechanical difficulties to be overcome, ______ would require some knowledge of electricity that we do not have.
A.
that
B.
what
C.
who
D.
which
【单选题】So there are more sophisticated approaches, some of them are mechanical.
A.
简单的
B.
推理的
C.
彻底的
D.
复杂的
【简答题】There are many items that need to be guaranteed for steel. The five guarantee indexes for the mechanical properties of steel refer to , , , and .
【单选题】对信号的分解,下述说法错误的是 。
A.
冲激信号之和
B.
阶跃信号之和
C.
直流分量和交流分量之和
D.
偶分量与奇分量之和
E.
偶分量与交流分量之和
【简答题】There are two types of mechanical steering system: rack-and-pinion steering system and recirculating-ball steering system.
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