采用横、竖挡板支撑、钢(木)框架支撑施工方法,在施工完毕拆除支撑时,应()分段拆除,拆一段回填夯实一段。
A.自上而下
B.自下而上
C.自左向右
D.自右向左
参考答案:B
China has successfull y sent up the Shenzhou Ⅶ spacecraft into space________with sophisticated
devices of science and technology.[ ]
A. to be equipped
B. equipped
C. equipping
D. having been equipped
治疗支原体肺炎应选用
A.耐青霉素酶的半合成青霉素或头孢菌素B.磺胺类药物C.大环内酯类药物D.头孢菌素类药物E.万古霉素