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【单选题】
某资料服从正态分布,其指标无论过低或过为异常,求 95% 参考值范围,宜计算
A.
均数 ±1.96× 标准差
B.
均数 ± 2.58× 标准差
C.
均数+ 1.96× 标准差
D.
均数- 1.645× 标准差
E.
均数+ 1.645× 标准差
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【单选题】Blood ( ) must be monitored in diabetics (and, in fact, most diseases are diagnosed by chemical analysis).
A.
Protein
B.
B PH
C.
glucos
D.
hemoglobin
【单选题】CATEGORY A EPIRB’s transmit on frequencies that are monitored by().
A.
orbiting satellites in space
B.
commercial radio stations
C.
private,commercial,and military aircraft
D.
ordinary radio stations
【单选题】在西葫芦的皮色遗传中,已知黄皮基因(Y)对绿皮基因(y)为显性,但在另一白色显性基因(W)存在时,则基因Y和y都不能表达。两对基因独立遗传。现有WwYy的个体自交,其后代表现型种类及比例是 [     ]
A.
4种,9:3:3:1
B.
2种,13:3
C.
3种,12:3:1
D.
3种,10:3:3
【多选题】Equipment, ( ) and ( ) controlled and monitored by the driver are arranged in the driver cab
A.
instruments
B.
meters
C.
pantograph
D.
main circuit breaker
【多选题】( )are monitored in the manufacturing process.
A.
Worker productivity
B.
Worker performance
C.
Level of quality
D.
Product output
【单选题】起重机的起升高度是指地面到()的垂直距离。
A.
吊钩项部
B.
吊钩钩口中心
C.
吊钩最高处
D.
起重机最高处
【判断题】Animals from commercial breeders are usually monitored carefully, and insufficient information on their health status is in most cases available.
A.
正确
B.
错误
【单选题】Warehousing labor safety practices in the United States are monitored by which federal government agency?
A.
Warehousing Safety Administration
B.
Department of Commerce
C.
Food and Drug Administration
D.
Consumer Product Safety Commission
E.
none of the above
【单选题】起重机的起升高度是指()。(单选题)
A.
臂端部距起重机支撑地面的距离
B.
钩下平面距起重支撑地面的距离
C.
吊钩升至最高位置(高度限位器所限制的位置)吊钩钩口中心距起重机支撑地面的距离
【单选题】在西葫芦的皮色遗传中,已知黄皮基因(Y)对绿皮基因(y)为显性,但在另一白皮基因(W)存在时,基因Y和y都不能正常表达(两对基因独立遗传)。现有基因型为WwYy的个体自交,其后代表现型种类及比例是 [     ]
A.
4种;9:3:3:1
B.
2种;13:3
C.
3种;12:3:1
D.
3种;10:3:3
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