下图是突触的结构模式图,下列叙述错误的是 [ ] A.②④⑤共同构成突触 B.①

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问题:

下图是突触的结构模式图,下列叙述错误的是

[ ]

A.②④⑤共同构成突触

B.①的形成需要高尔基体的参与

C.③作用于④,只能使突触后膜产生兴奋

D.由于③只能由②释放作用于④,所以兴奋在神经元之间的传递是单向的

考点:神经冲动的产生和传导
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在城市道路使用机械开挖电缆沟应遵守哪些规定?

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花的主要部分是[ ]

A.花柄和花托

B.花萼和花冠

C.雄蕊和雌蕊

D.子房和胚珠

题型:选择题

“没有适当形式的 * * 机关,就不能代表国家。”对这句话的正确理解是(   )

A.国体决定政体,政体具有相对独立性

B. * * 组织形式不同,其国体也不同

C.在国体相同的条件下,可以采取不同的 * * 组织形式

D.适当健全的政体能够维护和巩固统治阶级的统治地位

题型:选择题

With hundreds of millions of electronic()taking place daily, businesses and organizations have a p incentive to protect the()of the data exchanged in this manner, and to positively ensure the()of those involved in the transactions. This has led to an industry-wide quest for better, more secure methods for controlling IT operations, and for deploying p security mechanisms deeply and broadly throughout networked infrastructures and client devices. One of the more successful concepts to engage the imaginations of the security community has been the development of standards-based security()that can be incorporated in the hardware design of client computers. The principle of encapsulating core security capabilities in()and integrating security provisions at the deepest levels of the machine operation has significant benefits for both users and those responsible for securing IT operations.

With hundreds of millions of electronic()taking place daily.

A.devices

B.transactions

C.communications

D.businesses

题型:选择题

病毒性肺炎的主要诊断依据是()

A.淋巴细胞、单核细胞浸润

B.肺毛细血管床减少、闭塞

C.肺泡壁毛细血管扩张、充血

D.肺泡性肺炎

E.上皮细胞内病毒包涵体

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