logo - 刷刷题
下载APP
【判断题】

白皮松,高达30米,树冠阔圆锥形或卵形,主干明显或近基部分叉。

A.
正确
B.
错误
举报
题目标签:高达圆锥白皮松
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】Many national parks in the west areas of America are among the United States, most treasured natural spaces.From Yellowstone to Yosemite, US national parks stand as monuments to Americans, love of nat...

A.
Americans' cherish their legendary Wild West
B.
the recognition of the importance of these parks
C.
Americans' love of nature and spiritual connection to the land
D.
the appreciation of the beauty and recreation of these places

【单选题】PVC的含氯量高达56%,因而材料具有( )。

A.
阻燃性和自熄性
B.
毒性
C.
耐化学腐蚀性
D.
导电性

【单选题】圆锥直径的允许变动量为( )

A.
圆锥直径公差
B.
圆锥直径偏差
C.
圆锥直径误差
D.
圆锥直径