2.All US commercial space cargo will in the future have to fly on ________. (NASA’s New Plans for Space Shuttle Launches) A)military rockets B)NASA space shuttles C)private industries’ rockets D)rockets of foreign countries
参考答案:
下列注射法的进针角度哪项是错误的( )
下列注射法的进针角度哪项是错误的( ) A. 皮内-5o B. 皮下-10o~20o C. 肌内-90o D. 静脉-15o~30o E. 股静脉-90o