— I think I’m going to die.

—____, Joe. You only have a cold.

A．Don’t mention it

B．Take it easy

C．It’s hard to say

D．Take care

用静压法测一高位储槽的液位，压力计示值为lOOkPa，介质密度为1．2g／cm3，取压口距仪表高差5m，求高位储槽内的液位。