火焰几何形状可分为()。
A、圆柱火焰
B、平火焰
C、旋流火焰
D、直流锥形火焰
参考答案:B, C, D
An adolescent client immobilized in a spica cast complains of having trouble breathing after meals. Which of the following actions would be best
A. Encourage the client to drink more between meals.B. Teach the adolescent purse&lip breathing.C. Give the client a laxative after meals.D. Offer the client small feedings several times a day.
电信行业的发展必须打破垄断,电信行业的垄断( )。
A.降低了电信业的市场价格
B.提高了电信业的服务质量
C.制约了电信业的健康发展
D.扩大了电信业的市场需求