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【单选题】
设A 1 ,A 2 ,A 3 ,A 4 是平面直角坐标系中两两不同的四点,若 (λ∈R), (μ∈R),且 ,则称A 3 ,A 4 调和分割A 1 ,A 2 ,已知点C(c,0),D(d,0)(c,d∈R)调和分割点A(0,0),B(1,0),则下面说法正确的是 [     ]
A.
A、C可能是线段AB的中点
B.
B、D可能是线段AB的中点
C.
C,D可能同时在线段AB上
D.
C,D不可能同时在线段AB的延长线上
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【单选题】下列哪种脸型是最美的
A.
由字形脸
B.
卵圆形脸
C.
杏仁形脸型
D.
鹅蛋脸型
【单选题】狭窄骨盆的描述以下哪项说法不正确
A.
均小骨盆各条径线均比正常短2CM以上
B.
均小骨盆多见于身材矮小体形匀称妇女
C.
扁平骨盆入口正常,出口狭窄
D.
畸形骨盆,形态异常失去对称性
E.
漏斗骨盆中骨盆、出口平面狭窄
【单选题】When scientists first warned in the 1970s that CFCs could attack ozone, the U.S. responded by banning their use in spray cans. But the rest of the world continued to use CFC - based aerosol cans, and ...
A.
Because the CFCs directly damage the people’s health.
B.
Because the CFCs are poisonous chemicals.
C.
Because the production of the CFCs costs a lot.
D.
Because the CFCs can attack ozone by liberating atoms of chlorine.
【简答题】第一次实训作业 第一次实训销售确认书.docx
【单选题】下列哪种脸型是最美的?
A.
国字形脸型
B.
卵圆形脸型
C.
杏仁形脸型
D.
鹅蛋形脸型
【单选题】Scientists first______the idea of the atomic bomb in the 1930s.
A.
competed
B.
conceived
C.
consumed
D.
concealed
【单选题】Scientists first ______ the idea of the atomic bomb in the 1930s.
A.
perceived
B.
conceived
C.
deceived
D.
retrieved
【单选题】下述骨盆狭窄的描述,不正确的是
A.
骶耻外径<18cm:骨盆入口平面狭窄< /div>
B.
坐骨棘间径9cm:骨盆出口平面狭窄
C.
中骨盆和出口平面狭窄:漏斗骨盆
D.
骨盆失去正常形态和对称性:畸形骨盆
E.
骨盆各径线均小于正常值2cm或以上:均小骨盆
【单选题】HXD3型电力机车避雷器F1接在()之间。
A.
TV1和QF1
B.
TA1和QF1
C.
AP和QF1
【单选题】Scientists first ______ the idea of atomic bomb in the 1930s.
A.
deceived
B.
conceived
C.
relieved
D.
perceived
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