【判断题】当基准尺长度小于基线长度的二分之一时,选择不同的基准尺长度对基线精度的影响不显著。
【单选题】以下程序的执行结果是 ______。 #include<iostream.h> class Sample { int x; public: Sample(){}; Sample(int a){x=a;} Sample(Sample &a){x=a.x+1;} void disp(){cout<<'x='<<x<<end1;} } void main() { Sample s1(2),s2(s1);...
【判断题】当基准尺长度大于基线长度的二分之一时,对于基准尺垂直于基线的情况,基准尺长度对基线精度影响不显著。
【简答题】I didn’t see your sister at the meeting. If she _____, she would have met my brother. A. has come B. did come C. came D. had come
【判断题】当基准尺长度大于基线长度的二分之一时,对于基准尺平行于基线的情况,基准尺长度对基线精度影响不显著。
【单选题】I didn't see your sister at the meeting. If she ______, she would have met my father. [ ]
【单选题】I didn’t see your sister at the meeting. If she __________, she would have met my brother.
【判断题】作为招标方式的一种,邀请招标是最公开、公正、公平的方式,它是一种无限制的竞争方式,在世界上被广泛地采用。( )
【单选题】在10000米高度上,如果实际温度比标准大气暖,那么实际气压高度比标准大气高度( )。