采用石柱砌筑而成的桥一定是( )桥。
A．梁式
B．T形梁
C．拱式
D．箱形梁
参考答案：C
解析： 现浇板中单向板是载荷向两边支撑传递的板。
可吸入颗粒物是指粒径为______的颗粒物
A．≤0.4μm
B．≤1μm
C．≤2μm
D．≤5μm
E．≤10μm
— John, you really did a good job.
— Thanks, but I think I can do it even better if I have _____ time. [ ]
A. many
B. much
C. more
D. less
