钻井过程中发生溢流表现为：钻井液池液面升高，出口管钻井液流速加快，循环泵压（）等。
A、为零
B、急剧升高
C、不变
D、下降
参考答案：D
下面关于公理和定理的联系说法不正确的是（ ）
A．公理和定理都是真命题
B．公理就是定理，定理也是公理
C．公理和定理都可以作为推理论证的依据
D．公理的正确性不需证明，定理的正确性需证明
While assessing a 2-month-old child's airway, the nurse finds that the child isn't breathing. After two unsuccessful attempts to establish an airway, the nurse should
A．attempt rescue breaths.
B．attempt to reposition the airway a third time.
C．administer five back blows.
D．attempt to ventilate with a handheld resuscitation bag.
