皮皮学,免费搜题
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搜题
【单选题】
甲胎蛋白是
A.
隐蔽的自身抗原
B.
肿瘤相关抗原
C.
同种异体抗原
D.
肿瘤特异性抗原
E.
肿瘤移植相关抗原
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举一反三
【判断题】刀具长度补偿值的地址用 H , 刀具半径补偿值的地址用 D 。
A.
正确
B.
错误
【单选题】Which of the following statements is NOT true according to the passage?
A.
The new wine industry appeared in England and is now developing steadfastly.
B.
It was the Romans that first planted vines in the Britain Island.
C.
The monks still produced wine in England after the 16th century.
D.
The Bordeaux area of France was once part of British dominions.
【多选题】以下哪些镜头属于常用的人像摄影镜头
A.
35mm镜头
B.
85mm镜头
C.
200mm镜头
D.
50mm镜头
【判断题】由同一台变压器供电的配电网中,不允许一部分电气设备采用保护接地,一部分电气设备采用保护接零,即一般不允许同时采用TN系统和TT系统的混合运行方式。()
A.
正确
B.
错误
【单选题】What are the main demands of the demonstrators?
A.
Nationalization of the country's gas industry and new election.
B.
Constitutional reform. and new election.
C.
Constitutional reform. and revitalization of the country's gas industry.
D.
Nationalization of the country's gas industry and constitutional reform.
【多选题】以下哪些镜头属于常用的人像摄影镜头
A.
35mm镜头
B.
24mm镜头
C.
200mm镜头
D.
50mm镜头
【判断题】光缆由折射率较高的纤芯和折射率较低的包 层 组成。 ( )
A.
正确
B.
错误
【单选题】There's ______ in today's newspaper. [     ]
A.
new nothing
B.
new something
C.
anything new
D.
nothing new
【单选题】However, the moves can only be implemented after the country's petrochemical industry solves its ( ) problems..然而,这些措施只能在我国的石油化工业解决了它自身的内部问题之后才能执行。
A.
inter
B.
international
C.
internal
D.
insider
【单选题】光纤是一种直径为()μm柔软的传导光波的介质,一般由玻璃纤维和塑料构成,在折射率较高的纤芯外面,再用折射率较低的包层包住,再在包层的外面加上一层保护套,就构成了一根单芯光缆。
A.
50~100
B.
1~20
C.
20~50
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