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【单选题】
十进制数198,转换为二进制数,结果是()。A.
11001110
B.
11000110
C.
11100110
D.
01110110
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【单选题】A continuous watertight bulkhead on a ship may also be a/an ().
A.
structural bulkhead
B.
exterior bulkhead
C.
centerline bulkhead
D.
joiner bulkhead
【单选题】The boys________the newspaper on the ground and began to read the news and articles in it. [ ]
A.
extended
B.
expanded
C.
stretched
D.
spread
【单选题】The word 'monopolize' in the last paragraph means ______.
A.
confine
B.
migrate
C.
control
D.
extend
【简答题】在student_db数据库中,使用CREATE TABLE语句创建学生表: 表名: student 说明:学生基本信息表 属性列 数据类型 长度 空值 列约束 说明 st_id nVarChar 9 Not Null PK 学生学号 st_nm nVarChar 8 Not Null 学生姓名 st_ nVarChar 2 Null 学生性别 st_birth datetime Null ...
【简答题】现有关系数据库如下: 数据库名:学生选课数据库 学生表(学号,姓名,性别,年龄,专业) 课程表(课程号,课程名,学分,先行课程号) 选课表(ID, 学号,课程号,分数) 检索有一门或一门以上课程成绩小于60分的所有学生的信息,包括学号、姓名
【单选题】What does the comment 'This is logical' mean?
A.
There is no clear way to determine the extent of our ancestor' s knowledge of plants.
B.
It is not surprising that early humans had a detailed knowledge of plants.
C.
It is reasonable to assume that our ancestors behaved very much like people in preindustrial societies.
D.
Human knowledge of plants is well organized and very detailed.
【单选题】The internal force of a material, which tends to resist deformation when subjected to external forces, is known as _____.
A.
stress
B.
strain
C.
shear strength
D.
ultimate tensile strength
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