坚硬岩石地段,陡山坡上的半填半挖路基,当填方不大,但边坡伸出较远不易修筑时,可修筑( )。
A.护坡B.护堤C.护肩D.护脚
参考答案:C
登革出血热的实验室特点是()
A.白细胞和中性粒细胞升高
B.血小板减少
C.PT延长
D.CO2CP上升
E.血细胞比容减少
China’s oil price _____ very sharp increase during the year 2010 and it is continuing to rise further in 2011.
A.observed
B.witnessed
C.proved
D.supplied