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【单选题】
In Qin Dynasty, which road was functioning as a political and economic link between central China and frontier region in southwest China?
A.
The Southern Silk Road
B.
The Tea and Horse Caravan Road
C.
The ancient Sino-India Road
D.
The Five-Chi-Road
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参考解析：
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【单选题】Voltage regulation under secondary side load of transformer is called ().
A.
Voltage regulation without excitation
B.
On-load voltage regulating
C.
No load voltage regulation
【多选题】对于化脓性鼻窦炎,CT三维重建检查的目的是()
A.
显示炎症累及的所有窦房并准确定位
B.
显示窦口鼻道的狭窄与阻塞
C.
显示鼻窦区的解剖变异
D.
排除由于息肉及肿瘤等引起的继发鼻窦阻塞性炎症
【多选题】有关鼻骨骨折CT三维重建的意义在于()
A.
显示伴发的颅面部多发复杂骨折
B.
显示鼻骨的骨折线、骨碎片及移位情况
C.
可观察邻近软组织损伤情况
D.
排除血管沟、骨缝、鼻骨孔等正常结构,勿误为骨折线
【单选题】How old were the earliest human fossils in Yunnan?
A.
1 million years old
B.
1.7 million years old
C.
53 million years old
D.
3 million years old
【单选题】Where were the earliest human fossils in China discovered?
A.
Chenggong County
B.
Jinning County
C.
Lufeng County
D.
Yuanmou County
【单选题】The reason why the no-load current of the primary winding is very small when the transformer is in no-load operation is ().
A.
The number of turns of the original winding is large, and the resistance is large.
B.
Leakage reactance of primary winding is very large;
C.
Transformer excitation impedance is very high.
【单选题】Which tourist attraction is related to the stories between the leader of the local minorities and the Prime Minister of Shu Kingdom?
A.
The Bronze Museum in Lijiashang
B.
The Colorful Sand Forest
C.
The Earth Forest
D.
The Stone Forest