垄断优势理论
参考答案：
它是一种阐明当代跨国公司在海外投资具有垄断优势的理论。此理论认为，考察对外直接投资应从“垄断优势”着眼。
植物根际微生物大大超过根外土壤中的数量，其中下列因素不是促进因素（）。
A.根系分泌物；
B.根系造成的土壤通气状况改善
C.根系造成的土壤水分富集；
D.根际温度
A 15-year-old female with a urinary tract infection is admitted to the facility. She tells the nurse she hopes she's pregnant. Which of the following would be the best response by the nurse
A．"Does your mother know about this"
B．"Tell me what pregnancy would mean to you. "
C．"Congratulations. Does the baby's father know"
D．"I hope you aren't pregnant; you're too young. "
