检查机身下蒙皮是否有裂纹。 A: Examine the bottom skin panels of the fuselage for cracks. B: Inspect fuselage lowermost skin panels for cracks. C: Inspect fuselage underside skin panels for cracks.

Reinforced concrete beam is under normal service loads, and A: it usually works with cracks B: once the cracks appear, the crack is passing through to the total section C: once the cracks appear, the bonding force between the concrete and the reinforcement along the full length is lost D: it usually does not develop cracks

Reinforced concrete beams work with cracks under normal load.

Reinforced concrete beams work with cracks under normal load. A: 正确 B: 错误

‏ The cause of cracks in concrete are: stress due to applied （） and stress due to temperature or （） change when concrete is restrained。​‏​

While walking along the icy river banks, we could see cracks in the ice _____ in all directions.

Please correct the following sentences. 1.The houses were mere shanties, and rags were stuffed in the cracks and holes.

A proverb says: “The spring breeze cracks the tree barks”, which means the spring breeze is strong enough to crake the tree barks.（ ）

中国大学MOOC: The manager flied into a rage because he found cracks and leaks, which are signs of poor c_________ in a house.

如果中间有裂缝，更换风挡玻璃。 A: If there are cracks in the center ply, replace the windshield panel. B: If a center ply is cracked, replace the windshield panel.