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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.
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】8岁女孩。因"发热1个月余，咳嗽2周，气促1周"入院。体检：营养发育中等，面色苍白，气稍促，无皮疹、出血点，浅表淋巴结普遍肿大，左腋下有一淋巴结似核桃，咽轻度充血，HR120次／分，未闻及明显杂音，两肺呼吸音粗，无干、湿啰音，腹软，肝肋下5cm，脾肋下4cm，质均为中等，双睾丸不肿大，神经系统无异常。Hb85g／L，WBC32×109／L，N0.30，L0．60，有10％细胞形态较大，核染色质较细...
A.
营养性缺铁性贫血
B.
急性白血病
C.
营养性混合性贫血
D.
遗传性球形红细胞增多症
E.
红细胞G-6-PD缺陷症
【单选题】汉译英：“硫磺；尿素；核桃”，正确的翻译为：( )
A.
sulphur；walnut；urea
B.
sulphur；urea；walnut
C.
urea；sulphur；walnut
D.
walnut；urea；sulphur