喷射砼支护作用原理有哪些？（）
A、支撑作用
B、充填作用
C、隔绝作用
D、柔性支护作用
参考答案：A, B, C, D
说明链结构对高聚物粘度的影响。
A term neonate's mother is O-negative, and cord studies indicate that the neonate is A-positive. Which of the following would be least likely if the neonate developed neonate hemolytic disease
A．Lethargy or irritability.
B．Poor feeding patterns including vomiting.
C．Weight loss greater than 10%.
D．Signs of kernicterus.
