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【判断题】
水冷壁采用内螺纹管后，不会发生传热恶化A.
正确
B.
错误
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【单选题】What nucleus is located in the facial colliculus?
A.
Nucleus of abducent nerve
B.
Nucleus of facial nerve
C.
Nucleus of trochlear nerve
D.
Nuclerus of hypoglossal nerve
E.
Dorsal nucleus of vagus nerve
【单选题】What role does nacre play in the formation of pearls?
A.
It provides the nucleus around which a natural pearl develops.
B.
It is a calcium coating that protects the outside of the oyster's shell.
C.
It penetrates the membrane covering the oyster's soft body.
D.
It is the luminous substance that forms the pearl's outer layers.
【单选题】There are just as many protons in the nucleus as electrons______ around it.
A.
revolving
B.
spinning
C.
rotating
D.
spiraling
【单选题】What is the nucleus that does not belong to the hypothalamus?
A.
Paraventricular nucleus
B.
Ventral posterolateral nucleus
C.
Supraoptic nucleus
D.
Mammillary body
E.
Dorsomedial hypothalamic nucleus
【单选题】NSTL购买了电子期刊和数据库为国内用户免费服务,其中不包括:
A.
658种网络版全文电子期刊
B.
4种外文事实型数据库
C.
1500种外文回溯全文期刊
D.
9072种电子书
【单选题】对于高强度螺栓摩擦型连接,由于栓杆中有较大的预应力,所以高强度螺栓摩擦型连接( )。
A.
不能再承担外拉力，以免栓杆被拉断
B.
不能再承担外拉力，以免降低连接的抗剪承载力
C.
可以承载外拉力，因为栓杆中的拉力并未增加
D.
可以承担外拉力，但需限制栓杆拉力的增加值
【简答题】Around the nucleus of a hydrogen atom moves a single electron.
【单选题】Which nucleus receives the visceral sensory fibers in the brainstem?
A.
cochlear nucleus
B.
vestibular nucleus
C.
inferior olivary nucleus
D.
solitary nucleus
E.
sensory nucleus of trigeminal nerve
【单选题】2 对于高强度螺栓摩擦型连接,由于栓杆中有较大的预应力,所以高强度螺栓摩擦型连接( )
A.
不能再承担外应力，以免栓杆被拉断
B.
不能再承担外拉力，以免降低连接的抗剪承载力
C.
可以承载外应力，因为栓杆中的拉力并未增加
D.
可以承担外应力，但需限制栓杆拉力的增加值
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