在铁路膨胀土路堤边坡的防护措施中,( )措施是不适用的。()
A.(A) 植物
B.(B) 骨架植物
C.(C) 浆砌片石
D.(D) 支撑渗沟加拱形骨架植物
参考答案:C
—__________________?
—It doesn't work.[ ]
A. How are you
B. Where is your watch
C. What's wrong with your watch
D. How much is your watch
DN100的钢管流速校正系数和阻力校正系数各是()。
A、0.8,0.8
B、0.85,0.85
C、0.85,0.75
D、0.90,0.80