_______________will not continue if an ongoing operation is changed or deletedA、

一对双面水准尺的红、黑面的零点差应为_______、__________。

水准测量的测站校核，一般用______法或______法。

29．__________ when you are on the bus or bike．

圆水准器轴是圆水准器内壁圆弧零点的（）。

Which do you think is _________________important, health or wealth?

And they can ______their passports______，making leaving or “escaping” virtually impossible.

Either he or I ______to the airport.

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

普通水准测量，应在水准尺上读取________位数。

水准尺向前或向后方向倾斜对水准测量读数造成的误差是________。

水准管轴是________。