在泵卸料储罐的液位控制及联锁装置中，LIAS表示的意义，不正确的是（）
A、L表示液位
B、I表示指示
C、A表示报警
D、S表示连锁开关
参考答案：B
I the wonderful World Cup final of 2010 live on TV, but this summer vacation I missed it.
A．could have watched
B．might watch
C．must have watched
D．need have watched
—Could you tell me __________？
—Sorry, I don’t know.
A．how can I get to the Water Sports Center
B．when will Mr. Black come back
C．why is Tom late for class
D．where Mr. Green has gone
