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【单选题】
54（）
A．TA
B．TN1
C．TN2
D．TE1
A.
在ISDN网络中，与ISDN交换机直接相连的是 (54) 设备，他们通过 (55) 实现互连。NT1到用户设备之间的连接点是 (56) 。对于非ISDN设备要通过 (57) 设备接入ISDN网络，该设备的主要作用是 (58) 。
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参考解析：
刷刷题刷刷变学霸
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，则（）。【单选题】43（） A．采用应用网关互联 B．能通过路由选择至目的站 C．采用点到点协议直接互联 D．通过协议转化而可以访问资源
A.
Internet是全球最大的、开放的、由众多网络互联而形成的计算机网络，狭义Internet是指由上述提到网络中采用IP协议的网络互联而成的，广义Internet是指狭义Internet加上所有 (43) 的网络。Internet体系结构具有良好扩充性的主要原因在于它 (44) 。广义Internet的这种基于单一主干核心结构的弊端在于 (45) 。这种结构将逐渐被 (46) 所取代。
【单选题】52() A.willingness B.willing C.willpower D.weakness
A.
Sometimes, people (41) your life and you realize that they are there (42) some purpose, to (43) you a lesson, or to help you (44) who you are or who you want to become. You’d never know who these people (45) be, your friend, your classmate, your neighbor, your co-worker, your teacher, or (46) a stranger, but they will deeply (47) your life in some way.
B.
And sometimes things (48) to you that may seem (49) , painful and horrible at first, but (50) , you realize that without (51) those difficulties you would never know your strength, (52) or potential. Everything happens for a (53) . Nothing happens by (54) or by means of good luck. Illness, great achievement, love, injury and failure all come to (55) the limits of your soul. Without these tests, life would be like a straight and fiat road, but it goes (56) . It would be safe and comfortable, but dull and completely (57) .
C.
Those people who affect your life, and the failure and the success you experience can help you to create who you are and who you become. Even the bad experiences can (58) from. In fact, they are the most important ones. If someone breaks your heart, or hurts you, please (59) them, for they helped you to learn about the importance of being careful when you open your heart. If someone loves you, love them (60) , because they are teaching you to love and how to open your heart and eyes to things.
【单选题】A．0.001% B．0.005% C．0.01% D．0.05% E．0.1%
A.
检查某药物中的氯化物，称取供试品0.50g，依法检查，与标准氯化钠溶液（0.01mgCl-/ml）5ml制成的对照液比较，不得更浓，则氯化物的限量为（）
【单选题】44（） A．基于树形结构，具有层次性和单向依赖性 B．基于客户机服务器结构，具有单向依赖性 C．基于星形结构，结点之间无依赖性 D．基于环形结构，结点之间无依赖性
A.
Internet是全球最大的、开放的、由众多网络互联而形成的计算机网络，狭义Internet是指由上述提到网络中采用IP协议的网络互联而成的，广义Internet是指狭义Internet加上所有 (43) 的网络。Internet体系结构具有良好扩充性的主要原因在于它 (44) 。广义Internet的这种基于单一主干核心结构的弊端在于 (45) 。这种结构将逐渐被 (46) 所取代。
【单选题】Great changes (have) (taken place) (since) I (had visited) the city.()
A.
have
B.
taken place
C.
since
D.
had visited