干粉灭火系统日检查项目包括()。
A.干粉储存装置外观
B.灭火控制器运行情况
C.启动气体储瓶压力
D.驱动气体储瓶压力
E.干粉储存装置部件
参考答案:A, B, C, D
— When did you become a volunteer?
— Two years ago. I _____this group since then.[ ]
A. have joined in
B. have taken part in
C. have been in
D. have been to
将划线部分译成汉语。
1. Li Ming is tall.
2. I'm wearing a blue sweater.
3. I go to school by bus.
4. Stand for the right answer.
5. Do you like my new shoes?