问题
选择题
As _______ general rule, the working temperature of the installation (设备) is _______ more important consideration than the working pressures.
A．a; /
B．the; /
C．the; a
D．a; a
答案
答案：D
考查冠词用法。本题重点考查了不定冠词表示泛指的用法，两空都是表示的泛指。