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【多选题】
关于粘度以下说法正确的是A.
粘度常用的表示方法有三种动力粘度、运动粘度、相对粘度
B.
动力粘度的法定计量公式为F=μAdu/dy
C.
相对粘度又称条件粘度
D.
工业上20℃、50℃、100℃作为测定恩氏粘度的标准温度
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【简答题】下面哪些代码段是正确的Java源程序?( )A. import java.io.*; package testpackage; public class Test{/* do something... */} */} B. import java.io.*; class Person{/* do something... */} public class Test{/* do something....
【简答题】改错。 ( ) 1. Whatever finishes first wins . A B C ( ) 2. When we arrived at the airport, our flight has already left. A B C ( ) 3. E...
【简答题】It is a fact that traditional meals are (healthy) ______ than fast foods. 2. Nurses should treat the sick and wounded with great (kind) ______. 3. All visitors to the lab (expect) ______ to take off t...
【单选题】关于法律和国家关系的表述中,正确的是( )
A.
国家需要法律
B.
法律先于国家而产生
C.
法律不一定从属于国家
D.
法律的产生与国家的产生没有必然联系 【答案】 A
【简答题】1. Complete the following sentences using the passive voice. 1.
The results __________ (take) from the survey (调查). 2. The mail ___________ (deliver) at about 10:00 a.m. every
day. 3. When we arrived...
【单选题】When we arrived at the airport, the plane _______. A). already took off B). took off already C). had already taken off D). has already taken off
A.
1
B.
2
C.
3
D.
4
【简答题】As a teacher . I often make it a rule that when we are on a field trip , there will be no talking as we enter a building . This rule 1 to entering any place , whether it is a cinema , a church , a the...
【单选题】When we reached the pier, the ferry had not arrived, so we ___.
A.
a. needn’t have hurried
B.
b. needed not worry
C.
c. didn’t need to hurry
D.
d. need not to have worried
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