【判断题】测量使用的平面直角坐标是以两条互相垂直线的交点为坐标原点,以东西方向的横轴为x轴,以南北方向的纵轴为y轴。
【简答题】《中国近现代史纲要》课程的学习目标是什么?
【单选题】下列选项中,合法的一组 C 语言数值常量是。
【单选题】A variable displacement system of hydraulic drives consists of ().
A.
a variable displacement axial piston pump
B.
a constant displacement axial piston pump
C.
a reciprocating piston pump
【单选题】Which of the following descriptions about deformation and displacement is correct? ___
A.
The deformation is absolute and the displacement is relative
B.
The deformation is relative and the displacement is absolute