在对河流进行评价时，预测范围内的河段可以分为( )。
A．充分混合段
B．混合过程段
C．排污口下游河段
D．排污口上游河段
参考答案：A,B,D
动态风险和投机风险通常是( )。
A．可保风险
B．基本风险
C．不可保风险
D．个体风险
The nurse applies a fetal monitor to a 15-year-old primagravida admitted to the hospital with possible pregnancy-induced hypertension. Which monitor pattern would the nurse expect to observe if the client is experiencing uteroplacental insufficiency
A．Late deceleration.
B．Early deceleration.
C．Variable deceleration.
D．Fetal acceleration.
