“十二五”规划要求森林覆盖率提高到()。
A.21.56%
B.21.66%
C.21.76%
D.21.86%
参考答案:B
Napoleon's story proves that to be a hero has nothing to do with size, ______ with a smart mind and
a brave heart. [ ]
A. and
B. so
C. or
D. but
测风压的仪表包括S形皮手管U形管压力计、皮托管(测压管)、补偿式微压计。( )