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【单选题】
( )对垄断经营的最主要因素。
A.
商品组合
B.
店铺选址
C.
服务内容
D.
促销手段
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皮皮学刷刷变学霸
举一反三
【多选题】下列关于碱性焊条表述正确的是
A.
含氧量少,焊缝力学性能较高
B.
脱氧脱硫磷能力强
C.
不易引弧
D.
电弧相对没有酸性焊条稳定
【简答题】受精膜 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【单选题】Buoyancy is a measure of the ship's ______.
A.
freeboard
B.
deadweight
C.
ability to float
D.
midships strength
【单选题】What is reserve buoyancy?().
A.
The amount of buoyancy measured in foot/tons
B.
The vertical distance above the waterline inside the hull
C.
The volune of space that is filled with water
D.
The volume of intact space above the waterline
【单选题】晚期囊胚侵入子宫内膜的过程称为 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
受精
B.
精子获能
C.
受精过程
D.
着床
E.
受精卵发育
【单选题】What is reserve buoyancy?
A.
The amount of buoyancy measured in foot/tons
B.
The vertical distance above the waterline inside the hull
C.
The volume of space that is filled with water
D.
The volume of intact space above the waterline
【单选题】海胆精子入卵时,卵子表面形成何种结构?( ) prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
受精锥
B.
受精孔
C.
受精膜
D.
皮层颗粒
【单选题】The _______is the point at which a vertical line through the heeled ship’s center of buoyancy intersects with the vertical line through the upright ship’s center of buoyancy.
A.
 metacenter
B.
centre of buoyancy
C.
centre of gravity
D.
centre of flotation
【单选题】] What is reserve buoyancy ? ______
A.
The amount of buoyancy measure in foot / tons.
B.
The vertical distance above the waterline inside the hull.
C.
The volume of space that is filled with water.
D.
The volume of intact space above the waterline.
【单选题】引起前置胎盘的病因下列哪项不符
A.
人流、刮宫、感染等引起宫内膜受损及炎症
B.
单胎较双胎发生率高
C.
受精卵发育延迟 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
D.
多胎妊娠胎盘面积过大
E.
膜状胎盘
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