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【单选题】
目镜对光和物镜对光分别与( )有关。
A.
右手转动微倾螺旋的方向与左侧气泡移动方向一致
B.
右手转动微倾螺旋的方向与左侧气泡移动方向相反
C.
右手转动微倾螺旋的方向与右侧气泡移动方向一致
D.
右手转动微倾螺旋的方向与气泡运动方向无关
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【单选题】404· 重载船顶急流靠泊时,靠拢角度宜( )以减轻轧拢岸力。
A.
B.
C.
A、B都对
D.
A、B都错
【简答题】Complete the sentences with the following words or phrases. Change the form if necessary. 1. After Tom passed his driving test, he ________ an application for his driver’s license. 2. Mary and I have...
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【简答题】Task 2 Complete the sentences with the following words or phrases. Change the form if necessary. 1. After Tom passed his driving test, he ________ an application for his driver’s license. 2. Mary and...
【单选题】Once we have read the material, we want to discuss it or hear it ____ on, not repeated.
A.
doubtful
B.
domestic
C.
extensive
D.
elaborated
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【单选题】下列有关JDBC核心接口类描述有误的是()。
A.
Statement 接口的 executeQuery(String sql) 方法用于执行给定的 SQL 语句,该语句返回单个 ResultSet 对象。
B.
Statement 接口的 executeUpdate(String sql) 方法用于执行给定的 SQL 语句,该语句可能为 INSERT 、 UPDATE 或 DELETE 语句,或者不返回任何内容的 SQL 语句(如 SQL DDL 语句)。
C.
ResultSet 接口的 deleteRow() 方法可从此 ResultSet 对象删除当前行,但相应行的底层数据库中并没有删除此行。
D.
ResultSet 接口的 last() 方法用于将指针移动到此 ResultSet 对象的最后一行。
【简答题】comment think twice implement go off fill out 1. After Tom passed his driving test, he ________ an application for his driver’s license. 2. Mary and I have __________ cooking, so we live...
【单选题】Propeller aircraft use one or more airscrews to create thrust in a forward direction
A.
螺旋桨
B.
机翼
C.
桨叶
D.
尾桨
【简答题】Summary Read the text (P34) carefully and fill in the blanks. If we are 1.________ ourselves, most of us have 2. ________ being famous sometimes in our lives. Most musicians often meet and 3. __...
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