The cork oak tree has a layer of cork several inches thickness that can be stripped every ten years.（）
A: a layer
B: thickness
C: a layer
D: years
A: a layer
B: thickness
C: a layer
D: years
举一反三
- When determining the thickness of the compression layer in the same type of soil layer, the thickness of each layer should not be too large, generally not more than 0.4b (b is the width of the base) or 1 to 2m
- When determining the thickness of the compression layer in the same type of soil layer, the thickness of each layer should not be too large, generally not more than 0.4b (b is the width of the base) or 1 to 2m A: 正确 B: 错误
- The parameters for predicting oil and gas PIIP include . A: Oil (gas) area B: Average thickness of oil (gas) layer C: Single storage coefficient D: Thickness of source rock
- Red culture can be divided into two types: “Material layer”and ( ). A: Spiritual layer B: Cultural layer C: Social layer
- The dimension of the cutting layer measured along the machined surface is called （ ） A: cutting depth B: cutting length C: cutting width D: cutting thickness