--- We ______ that you would fix the TV set this week.

　--- I’m sorry. I ______ to fix it this week, but I’ve been too busy.

A．had expected; had intended

B．are expecting; had intended

C．expect; intend

D．expected; intend

以下对于低压储气罐的叙述不正确的为( )。

A．干式储气罐主要由水槽及钟罩组成
B．干式罐按可动部分的密封材料区分为曼型、可隆型、维金斯型
C．湿式罐是以水作为活动部位的密封介质，有直立导轨式和螺旋导轨式
D．低压储气罐是用于气源压力较低时的储气设备，按照活动部位构造及密封介质分为湿式和干式两种