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【单选题】Less Is More It sounds all wrong--drilling holes in a piece of wood to make it more resistant to knocks. But it works because the energy from the blow gets distributed throughout the wood rather than...
A.
which
B.
there
C.
that
D.
where
【单选题】Less Is More It sounds all wrong—drilling holes in a piece of wood to make it more resistant to knocks. But it works because the energy from the blow gets distributed throughout the wood rather than ...
A.
or
B.
although
C.
and
D.
despite
【单选题】Less Is More It sounds all wrong—drilling holes in a piece of wood to make it more resistant to knocks. But it works because the energy from the blow gets distributed throughout the wood rather than ...
A.
in
B.
since
C.
for
D.
at
【单选题】Less Is More It sounds all wrong-drilling holes in a piece of wood to make it more resistant to knocks. But it works because the energy from the blow gets distributed throughout the wood rather than ...
A.
A uniform substance doesn’t cope well with knocks because only a small proportion of the material is actually (8) . All the energy from the blow goes towards breaking the material in one or two places, but often the pieces left (9) are pristine (未经破坏的).
B.
But instead of the energy being concentrated in one place, the holes provide many weak spots that all absorb energy as they break, says Vincent. "You are controlling the places (10) the wood breaks, and it can then absorb more (11) , more safely. "
C.
The researchers believe the principle could be applied to any material- (12) example, to manufacture lighter and more protective packaging. It could (13) be used in car bumpers, crash barriers and arm our for military vehicles, says Ulrike Wegst, (14) the Max Plank Institute for Mental Research in Stuttgart. But she emphasizes that you (15) to design the substance with the direction of force in mind. "The direction of loading is crucial," she says.
【单选题】Less Is More It sounds all wrong--drilling holes in a piece of wood to make it more resistant to knocks. But it works because the energy from the blow gets distributed throughout the wood rather than...
A.
effected
B.
beaten
C.
slapped
D.
affected
【单选题】同玉米田相比较，高山云杉林：（）
A.
更稳定，其生存不需要额外的能量补给
B.
更稳定，但需要输入大量的额外能量
C.
稳定性较差，其生存要依靠大量补给额外能量
D.
稳定性较差，但由于具有极强的自我调节能力，所以不需要额外能量的补给
【单选题】贺兰山在海拔2400~3100米的阴坡分布有云杉天然林带，其原因是
A.
海拔高，日照较强，辐射量大
B.
气温低，蒸发较少，土壤水分条件较好
C.
气温较高，且年温差、日温差大
D.
位于湿润气流迎风坡，降水较多，水源充足
相关题目：
【判断题】红松、落叶松、云杉、臭松，这些树种中都有正常的树脂道。
A.
正确
B.
错误
【单选题】云杉比油松（）。
A.
喜光
B.
耐旱
C.
耐瘠薄
D.
耐寒冷
【单选题】判断云杉不能在华北平原上生长的原因：（）
A.
降水量太大
B.
温度过高
C.
土壤中缺乏云杉生长所需要的元素
D.
温度过低
【单选题】Less Is More It sounds all wrong-drilling holes in a piece of wood to make it more resistant to knocks. But it works because the energy from the blow gets distributed throughout the wood rather than ...
A.
A uniform substance doesn’t cope well with knocks because only a small proportion of the material is actually (8) . All the energy from the blow goes towards breaking the material in one or two places, but often the pieces left (9) are pristine (未经破坏的).
B.
But instead of the energy being concentrated in one place, the holes provide many weak spots that all absorb energy as they break, says Vincent. "You are controlling the places (10) the wood breaks, and it can then absorb more (11) , more safely. "
C.
The researchers believe the principle could be applied to any material- (12) example, to manufacture lighter and more protective packaging. It could (13) be used in car bumpers, crash barriers and arm our for military vehicles, says Ulrike Wegst, (14) the Max Plank Institute for Mental Research in Stuttgart. But she emphasizes that you (15) to design the substance with the direction of force in mind. "The direction of loading is crucial," she says.
【判断题】世界上翼展最长的飞机是A380，绰号“云杉鹅”。
A.
正确
B.
错误
【判断题】“云杉鹅”是一款水上飞机。A. √B. ×
A.
正确
B.
错误
【单选题】白桦、云杉在自然条件下不能在华北平原生长是由于 ( )
A.
水分的限制
B.
低温的限制
C.
高温的限制
D.
养分的限制
【判断题】冷杉不属于杉科，金钱松不属于松科，竹柏不属于柏科。()
A.
正确
B.
错误
【单选题】云杉鹅是世界上最重的飞机。
A.
√
B.
×
【判断题】世界上翼展最长的飞机是H4赫拉克勒斯,绰号“云杉鹅”。A. √B. ×
A.
正确
B.
错误
【单选题】同玉米田相比较，高山云杉林：（）
A.
更稳定，其生存不需要额外的能量补给
B.
更稳定，但需要输入大量的额外能量
C.
稳定性较差，其生存要依靠大量补给额外能量
D.
稳定性较差，但由于具有极强的自我调节能力，所以不需要额外能量的补给
【单选题】植物︰树︰冷杉
A.
哺乳动物︰猫︰熊猫
B.
犬︰狼︰狗
C.
昆虫︰蚂蚁︰工蚁
D.
鸟︰蝙蝠︰飞鼠
【单选题】贺兰山在海拔2400~3100米的阴坡分布有云杉天然林带，其原因是
A.
海拔高，日照较强，辐射量大
B.
气温低，蒸发较少，土壤水分条件较好
C.
气温较高，且年温差、日温差大
D.
位于湿润气流迎风坡，降水较多，水源充足