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【简答题】
(a)、(b)两根都是大柔度杆,材料、杆长和横截面形状大小都相同,杆端约束不同。 其中(a)为两端铰支,(b)为一端固定,一端自由。那么两杆临界力之比应为(____)。
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【简答题】These two products _________ two different audiences. A link to Bmake up Ccater to Drecall up
【单选题】_________side of the street is lied with different shops, _________of which sell electronic products.
A.
Both; both
B.
Either; all
C.
Neither; either
D.
Either; both
【单选题】The production method is not dependent on the size of a company because different products can ______.
A.
be displayed at different locations
B.
be produced by different production methods
C.
be designed by different specialists
D.
be sold at different markets
【单选题】According to the specifications, the two products are intended for two different uses, though at first glance they look ______ identical.
A.
near
B.
nears
C.
nearing
D.
nearly
【单选题】患儿男，1岁，因“感冒后呼吸急促、咳嗽、不能平卧1d”来诊。查体：心界扩大，HR150次/min，律齐，第二心音增强并有奔马律，肺部有哮鸣音。胸部X线片：心影增大，左心增大为主，肺纹理增粗。ECG://左心室肥厚、胸前导联T波倒置。超声心动图：全心呈球形扩大，室间隔变薄并呈圆弧样膨向右心室，左心室心尖部圆隆，左心室心内膜回声增强，收缩及舒张运动明显减弱，收缩期室壁增厚率明显减低，左心室射血分数28...
A.
心内膜胶原弹力纤维增生症
B.
扩张型心肌病
C.
限制型心肌病
D.
酒精性心肌病
E.
心肌致密化不全
【单选题】Oil is an important ______ material which can be processed into many different products, including plastics.
A.
raw
B.
bleak
C.
flexible
D.
fertile
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