He ought ( ) so soon. A、to not have leftB、to have not leftC、not to have leftD、not have left
He ought ( ) so soon.
A、to not have left
B、to have not left
C、not to have left
D、not have left
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下列反应 2 SO2（g）＋ O2（g）＝ 2 SO3（g） 达平衡时，保持体积不变，加入惰性气体 He ，使总压力增加一倍，则A．平衡向左移动B．平衡向右移动C．平衡不发生移动D．条件不足，无法判断
下列反应达平衡时，2SO2（g) + O2（g) =2SO3（g)，保持体积不变，加入惰性气体He，使总压力增加一倍，则：A．平衡向左移动B．平衡向右移动C．平衡不发生移动D．无法判断