It is easy to think of a library as a place where a lot of old books sit unused on the shelf. On the other hand, libraries can be thought of as extremely timely and up to date. They have current books, magazines, newspapers, and other materials that would be very expensive and space-consuming if you were to subscribe to them all. Many libraries have extensive collections of nonbook materials as well, including large recorded- music collections.
The best way to use a library is to have some idea of how it is organized. Then you can use the people in the library as efficiently as possible. It is the staff of the library that really make it work. They know where to find the information you need.
You should be aware that different people in the library have different jobs. They range from highly trained reference librarians to part-time clerical help who probably don't know much beyond their specific job. The first thing to do if you are looking for information on a particular topic is to find the right person to help you.
Approach one of the library staff members (preferably one behind the desk in the reference section), and say, "Are you a reference librarian?" If you get an affirmative answer, then explain what you are looking for and, if appropriate, why you are looking for it. The reference librarian can then make a professional judgment about what materials to lead you to. People differ, of course, but generally reference librarians are eager to demonstrate the special training and knowledge they have. Many will really go all out to help you.
A university may be regarded as a nice one because of ______.
A.its size
B.its old teachers
C.its large library
D.its old books
第2题
关于头期胃液分泌的特点,错误的是
A.易受情绪和食欲的影响
B.分泌量占整个消化期分泌量的30%
C.胃液分泌的酸度和胃蛋白酶均高
D.主要以胃酸的分泌量增加为主
E.是由进食动作引起的
第3题
关于头期胃液分泌的特点,错误的是
A.易受情绪和食欲的影响
B.分泌量占整个消化期分泌量的30%
C.胃液分泌的酸度和胃蛋白酶均高
D.主要以胃酸的分泌量增加为主
E.是由进食动作引起的
第5题
关于头期胃液分泌特点,错误的是
A.由胃体,胃底粘膜内G细胞合成分泌
B.盐酸和脂肪酸是刺激此释放的主要因素
C.主要作用是刺激壁细胞分泌盐酸
D.最小活性片段是其N端的4个氨基酸
E.胃窦切除的患者此分泌不受影响
第6题
有关头期胃液分泌的特点,下列哪一项是错误的
A、持续时间短
B、量大
C、酸度高
D、胃蛋白酶含量高
E、与情绪有关
第8题
A.头期分泌主要是体液调节
B.胃期分泌兼有神经和体液调节
C.肠期分泌主要是神经调节
D.头期.胃期和肠期分泌都有自身调节
E.头期胃液的分泌量与食欲无关
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