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【单选题】
观察下列模型并结合有关信息，判断有关说法正确的是 硼晶体的结构单元 SF 6 分子 S 8 分子 NaCl 结构模型示意图 备注 熔点1873K / 易溶于CS 2 /
A.
单质硼属分子晶体，其结构单元B 12 中含有30个B-B键，含20个正三角形
B.
SF 6 是由极性键构成的分子
C.
固态硫S 8 属于原子晶体
D.
NaCl熔化和溶于能产生自由移动的离子，且破坏的是同种作用力，NaCl晶胞中每个Na + 周围最近且等距离的Na + 有6个
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举一反三
【单选题】If no gaskets are used in the piping joints of a Freon system, the joints must be（）
A.
finished joints
B.
welded joints
C.
ground joints
D.
soldered joints
查看完整题目与答案
【单选题】According to the article, why should building joints be agile?
A.
Such joints are cheap.
B.
Such joints make buildings flexible and moveable.
C.
Such joints are concrete frames.
D.
Such joints make the buildings rigid.
查看完整题目与答案
【判断题】仲裁协议有两种形式，即仲裁条款和提交仲裁的协议。两种形式虽不同，但其法律作用与效力是相同的。(    )
A.
正确
B.
错误
查看完整题目与答案
【单选题】U-joints in the shaft accommodate any angular variations between the steering shaft and the______ .
A.
reservoir
B.
drag link
C.
pitman arm
D.
steering gear input shaft
查看完整题目与答案
【判断题】仲裁协议有两种形式,即仲裁条款和提交仲裁的协议。两种形式不同,其法律作用与效力也是不相同的。
A.
正确
B.
错误
查看完整题目与答案
【单选题】In usual marine applications, bellows joints are designed and fitted to accommodate straight line axial movement only and the associated piping requires adequate anchors and guides to prevent misalign...
A.
The marine bellows joints are attached in the accommodation only
B.
The bellows joints should be attached to anchors
C.
The associated piping should be thrown into the water like as anchors
D.
The connecting piping with the joints should be fixed firmly
查看完整题目与答案
【单选题】The metatarsophalangeal joints are which type of synovial joints?
A.
saddle joints
B.
hinge joints
C.
condyloid joints
D.
pivot joints
E.
spheroidal joints
查看完整题目与答案
【单选题】属于外源性凝血途径的因子是
A.
FⅧ
B.
FⅪ
C.
FⅨ
D.
FⅦ
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【多选题】Which belong to the joints of the vertebral arch ( )
A.
Ligamenta flava
B.
Interspinal ligaments
C.
Intertransverse ligaments
D.
Intervertebral disc
E.
Zygapophysial joints
查看完整题目与答案
【单选题】用万用表检测照明灯某线路两端,电阻为0,说明此线路( )。
A.
短路
B.
搭铁
C.
良好
D.
接触不良
查看完整题目与答案
相关题目：
【单选题】If no gaskets are used in the piping joints of a Freon system, the joints must be（）
A.
finished joints
B.
welded joints
C.
ground joints
D.
soldered joints
查看完整题目与答案
【单选题】According to the article, why should building joints be agile?
A.
Such joints are cheap.
B.
Such joints make buildings flexible and moveable.
C.
Such joints are concrete frames.
D.
Such joints make the buildings rigid.
查看完整题目与答案
【判断题】仲裁协议有两种形式，即仲裁条款和提交仲裁的协议。两种形式虽不同，但其法律作用与效力是相同的。(    )
A.
正确
B.
错误
查看完整题目与答案
【单选题】U-joints in the shaft accommodate any angular variations between the steering shaft and the______ .
A.
reservoir
B.
drag link
C.
pitman arm
D.
steering gear input shaft
查看完整题目与答案
【判断题】仲裁协议有两种形式,即仲裁条款和提交仲裁的协议。两种形式不同,其法律作用与效力也是不相同的。
A.
正确
B.
错误
查看完整题目与答案
【单选题】In usual marine applications, bellows joints are designed and fitted to accommodate straight line axial movement only and the associated piping requires adequate anchors and guides to prevent misalign...
A.
The marine bellows joints are attached in the accommodation only
B.
The bellows joints should be attached to anchors
C.
The associated piping should be thrown into the water like as anchors
D.
The connecting piping with the joints should be fixed firmly
查看完整题目与答案
【单选题】The metatarsophalangeal joints are which type of synovial joints?
A.
saddle joints
B.
hinge joints
C.
condyloid joints
D.
pivot joints
E.
spheroidal joints
查看完整题目与答案
【单选题】属于外源性凝血途径的因子是
A.
FⅧ
B.
FⅪ
C.
FⅨ
D.
FⅦ
查看完整题目与答案
【多选题】Which belong to the joints of the vertebral arch ( )
A.
Ligamenta flava
B.
Interspinal ligaments
C.
Intertransverse ligaments
D.
Intervertebral disc
E.
Zygapophysial joints
查看完整题目与答案
【单选题】用万用表检测照明灯某线路两端,电阻为0,说明此线路( )。
A.
短路
B.
搭铁
C.
良好
D.
接触不良
查看完整题目与答案