Idioms nominal in nature have a(n) ______ as the key word in each and function as a noun in sentences.

用光学经纬仪测量水平角与竖直角时，度盘与读数指标的关系是（）

下列不属于合同内容变更的是()。

Which of the following is NOT one of the characteristics of idioms?

合同转让是指()。

Which of the following is NOT one of the context clues?

下列关于债权让与的说法正确的是()。

各测回间改变零方向的度盘位置是为了削弱 () 误差影响。

There is an ambiguity in the sentence “ He is a hard businessman ” due to ______.

下列合同中能够依法变更的是()。