既是质数又是奇数的最小的数是______．
根据分析知：既是质数又是奇数的最小的数是3．
故答案为：3．
"Better city, Better life", theme of Shanghai Expo 2010, fully ________ the significance and the universal values of modem spirits — Harmony, Progress and Dream.
A．reflects
B．announces
C．creates
D．permits
推车式泡沫灭火器能持续喷射（）秒.
A.170~175
B.170~180
C.170~185
