对于一架不具有超动力发动机的飞机来说，高度对最小操纵速度VMC的影响是什么？
参考答案：
随着高度增加而减小。
A woman in labor shouts to the nurse, "My baby is coming right now! I feel like I have to push!" An immediate nursing assessment reveals that the head of the fetus is crowning. After asking another staff member to notify the physician and setting up for delivery, which nursing intervention is most appropriate ？（）
A．Gently pulling at the neonate’s head as it’s delivered.
B．Holding the neonate’s head back until the physician arrives.
C．Applying gentle pressure to the neonate’s head as it’s delivered.
D．Placing the mother in a Trendelenburg position until the physician arrives.
男性患者，18岁，车祸挤压伤，尿量100ml/24小时，血钾6mmol/L，心电图T波高尖，QRS期延长，应考虑其危险是
A．成人呼吸窘迫综合征B．急性肾功能衰竭C．血容量不足D．心功能不全E．脑水肿
