Many teachers believe that the responsibilities for learning lie with the student. (1)_____ a long reading assignment is given, instructors expect students to be familiar with the (2)_____ in the reading even if they do not discuss it in class or take an examination. The (3)_____ student is considered to be (4)_____ who is motivated to learn for the sake of (5)_____, not the one interested only in getting high grades. Sometimes homework is returned (6)_____ brief written comments but without a grade. Even if a grade is not given, the student is (7)_____ for learning the material assigned.
When research is (8)_____,the professor expects the student to take it actively and to complete it with (9)_____ guidance. It is the (10)_____ responsibility to find books, magazines, and articles in the library. Professors do not have the time to explain (11)_____ a university library works; they expect students, (12)_____ graduate students, to be able to exhaust the reference (13)_____ in the library. Professor will help students who need it, but (14)_____ that their students should not be (15)_____,dependent on them. In the United States professors have many other duties (16)_____ teaching, such as administrative or research work. (17)_____, the time that a professor can spend with a student outside of class is (18)_____.If a student has problems with classroom work, the student should either, (19)_____ a professor during office hours (20)_____ make an appointment.
A.If
B.Although
C.Because
D.Since
第3题
目前常用的对钢材表面进行处理的机械方法是()。
A.干喷砂法
B.手工方法
C.无尘喷砂法
D.酸洗法
第4题
要使水工钢闸门表面达到一级处理标准,最好的方法是采用()方法进行除锈。
A.人工处理
B.机械处理
C.喷砂处理
D.火焰处理
第5题
最适合船上维修保养的钢材表面处理方法是()。
A.机械表面清理
B.喷砂清理
C.超高压喷水清理
第6题
关于混凝土后浇带下列说法最合适的是,宜优先采用()混凝土施工。
A.防水性好的
B.流动性好的
C.补偿收缩的
D.早强的
第7题
最适合船上日常维修保养的钢材表面处理方法是__。
A.机械表面清理
B.喷砂清理
C.超高压喷射水清理
第8题
钢材表面的处理方法中,干喷砂法的主要优点是()。
A.效率高、质量好、设备简单
B.灰尘很少、但效率及质量均比干喷砂法差,且湿砂回收困难
C.操作条件好,劳动强度低,是一种有发展前途的机械喷砂法
D.质量高,但只适用于较厚的,不怕碰撞的工件
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