皮皮学,免费搜题
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搜题
【单选题】
mRNA的主要功能是( )
A.
运输活性氨基酸到核糖体上
B.
将DNA遗传信息带到核糖体上作为蛋白质合成的模版
C.
作为核糖体的组成成分
D.
能进行自我复制
E.
提供能量
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【简答题】当一个栅格单元内有多个可选属性值时,可按一定方法来确定栅格属性值,常用的方法有A. 中心点法,面积占优法,重要性法,长度占优法
【判断题】每个栅格单元可以存在多个值。
A.
正确
B.
错误
【多选题】当一个栅格的单元内有多个可选属性时,按一定方法来确定栅格属性植,以下方法正确的是( )
A.
中心点法
B.
重要性法
C.
长度占优法
D.
点位法
【单选题】They had a holiday ______ice and snow because they travelled across Greenland.
A.
is full of
B.
is filled with
C.
full of
D.
full with
【单选题】What was people's reaction whey they saw the snow?
A.
They were screaming when seeing the snow
B.
They were so amazed that some stood there staring
C.
They were driven to work
【单选题】在获取栅格数据时,能提高精度,减少信息损失的办法是( )。
A.
增大栅格单元面积
B.
缩小栅格单元面积
C.
改变栅格形状
D.
减少栅格总数
【判断题】当一个栅格单元内有多个可选属性值时,确定栅格属性值的方法主要有:中心点法,面积占优法,重要性法和长度占优法。这种说法(    )
A.
正确
B.
错误
【单选题】What do the simplest snow crystals look like?
A.
They have six columns.
B.
They are flaky.
C.
They are cubic in shape.
D.
They are six—sided.
【单选题】How did the men get their water supply at the South Pole?
A.
They dug out clean snow.
B.
They depended on ships to bring them water supply.
C.
They depended on planes to bring them water supply.
【判断题】They will take a coach to enjoy the Snow Sculpture.
A.
正确
B.
错误
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