若沼气中硫化氢含量低于0.2g/m3时，沼气可不需要脱硫即可直接使用。
参考答案：错
Jenny has got _______ it takes to be a good actress. In other words, she has the potential to become famous.
A．when
B．what
C．that
D．how
常用（）压力计来测量炉膛负压。
A、弹簧管式
B、电接点式
C、膜盒式
D、热电阻式
