中、重度慢性肝炎（）急性普通型肝炎（）急性重型肝炎（） A.点状坏死 B.桥接坏死

伏暑的发病季节：（）

To be honest, if it were not for the fact that you ____ my close friend, I would not take such pains

to serve you. [ ]

A. were

B. are

C. had been

D. have been

经纬仪的能测量水平角、（）、间接地测定两点间的平距和高差。

土方量小时可以堆在基坑边缘。（）

开铝箔封口机前，必须先开输送带。