1. The surface width of cracks shall not generally exceed. a. 0.1 mm b. 0.2 mm c. 0.3 mm d. 0.4 mm Show Answer Answer : c 2. Beaufort scale measure the velocity (km/h) of wind at a height of ……... above flat ground a) 10 m b) 20 m c) 30 m d) 40 m Show Answer Answer : a
