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【单选题】
关于正偏态分布资料，下列说法正确的是A.
集中位置偏向数值较大一侧
B.
峰偏左，长尾向右侧
C.
峰偏右，长尾向左侧
D.
均数小于中位数
E.
适合用算术均数描述其集中位置
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皮皮学刷刷变学霸
举一反三
【单选题】It is clear that the dog has a much greater _____ of its brain devoted to smell than is the case with humans.
A.
proportion
B.
percent
C.
composition
D.
compound
【多选题】(7分)现有下列高聚物：
A.
B.
天然橡胶
C.
硫化橡胶
D.
用于制备电木的酚醛树脂 (E)有机玻璃，其中属于线型结构的是___________，属于体型结构的是___________，可溶于有机溶剂的是___________，加热能熔融的是___________，用于制备轮胎的是___________，用于制备车窗玻璃的是___________，用于制备插座、电器把手的是______________________。
【单选题】It is clear that the dog has a much greater _____ of its brain devoted to smell than is the case with humans.
A.
composition
B.
compound
C.
percent
D.
proportion
【单选题】____allow the engines to be placed wherever is most suitable , as they no longer have to be aligned with reduction gearing and shafting as is the case with conventional installations
A.
diesel engine propulsion
B.
diesel electric propulsion
C.
steam engine propulsion
D.
gas turbine propulsion
【单选题】（） allows the engine to be placed wherever is most suitable, as they no longer have to be aligned with reduction gearing and shafting as is the case with conventional installations.
A.
Diesel engine propulsion
B.
Diesel electric propulsion
C.
Steam engine propulsion
D.
Gas turbine propulsion
【简答题】2019年1月29日,蓝牙技术联盟(SIG)宣布蓝牙5.1正式公布,新版本的蓝牙传输速度上限为 Mbps,是之前4.2LE版本的两倍。
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