排砌土袋时,要排砌紧密,上下层要()。
A.对齐
B.对缝
C.垂直
D.错缝掩压
参考答案:D
It was Asimov was eleven years old his talent for writing became obvious.
A.that, when
B.When, which
C.when, when
D.when, that
在风景园林构成要素中,()是风景园林规划设计的基础,是构成园林景观的骨架。
A.园路及铺地
B.地形
C.水体
D.植物