问题
单项选择题
干粉灭火系统施工程序中,管道安装的紧前程序是()。
A.施工准备
B.吹扫
C.设备和组件安装
D.管道试压
答案
参考答案:C
干粉灭火系统施工程序中,管道安装的紧前程序是()。
A.施工准备
B.吹扫
C.设备和组件安装
D.管道试压
参考答案:C
Passage Four
How did Benjamin Graham view stock investment
A.He believed that both trading stocks and investing stocks are risky.
B.He regarded investing stocks equally risky as trading stocks.
C.He insisted that trading stocks were less valuable than investing stocks.
D.He compared hot stocks to fashionable dogs.