A．0
B．(t-1)f’(0)
C．tf’(0)
D．f’(0)

正确

错误

百分之一

千分之一

万分之一

百分之十

千分之三

由某种确定的原因引起的，一般有固定的方向和大小，重复测定时重复出现

由某种确定的原因引起的，一般没有固定的方向和大小，正负误差出现的概率大致相同

由偶然的原因引起的，一般没有固定的方向和大小，正负误差出现的概率大致相同

由某种确定的原因引起的，可通过增加平行测定的次数减小误差

由偶然的原因引起的，可通过增加平行测定的次数减小误差

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) 。

青霉素

青霉胺

青霉醛

青霉烯酸

青霉噻唑酸

函数f(x)在[1，+∞)上具有连续导数，且，则（）。

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。

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.

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) .

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.

1位

2位

3位

4位

5位

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（）