【判断题】可燃气体的爆炸极限的范围越大,危险越小。()A. 对 B. 错
【判断题】可燃气体的爆炸极限的范围越大,其危险性越小。( )
【判断题】可燃气体的爆炸极限的范围越大,其危险性越小。
【单选题】Zhou Lan insisted on to work in Xinjinag.
【判断题】可燃气体的爆炸极限的范围越大,其危险性越小。
【单选题】元组比较操作(a1,a2)≥(b1,b2)的意义是_____。
A.
(a1>b1) OR ((a1=b1) AND (a2≥b2))
B.
(a1≥b1) OR ((a1=b1) AND (a2≥b2))
C.
(a1>b1) OR ((a1=b1) AND (a2>b2))
D.
(a1≥b1) OR ((a1=b1) AND (a2>b2)
【单选题】There ____ a sports meet in our school. I will take part in the long jump.
【单选题】—There ______ a sports meet next week. —Exciting news. [ ]
【单选题】某企业对A1型号的方钢采用先进先出计价方式进行核算,5月末库存A1重型号的方钢为最( )记录?