Given： What is the result？（）

A、 test

B、 Exception

C、 Compilation fails.

D、 NullPointerException

Which of the following connector types is used on CAT5e cable?（）

A、RJ-45

B、ST

C、RJ-11

D、BNC

The user HR owns the EMP table. The user HR grants privileges to the user SCOTT by using this command：  SQL> GRANT SELECT，INSERT，UPDATE ON emp TO scott WITH GRANT OPTION； The user SCOTT executes this command to grant privileges to the user JIM： SQL> GRANT SELECT，INSERT，UPDATE ON hr.emp TO jim；  Now， the user HR decides to revoke privileges from JIM using this command： SQL> REVOKE SELECT，INSERT，UPDATE ON emp FROM jim； Which statement is true after HR issues the REVOKE command（）

A、The command fails because SCOTT still has privileges.

B、The command succeeds and privileges are revoked from JIM.

C、The command fails because HR cannot revoke the privileges from JIM.

D、The command succeeds and only HR has the privilege to perform the SELECT， INSERT， and UPDATEoperations on the EMP table.

线缆接头、接地卡做防水抱扎，要按顺序紧密缠绕绝缘胶带和防水胶带（采用3X3处理，即3层绝缘+3层防水+3层绝缘），馈线抱扎后擦启用扎带将抱扎处固定后涂上硅胶。（）

A、对

B、错

The ORDERS table has these columns: ORDER_ID NUMBER(4) NOT NULL CUSTOMER_ID NUMBER(12) NOT NULL ORDER_TOTAL NUMBER(10,2) The ORDERS table tracks the Order number, the order total, and the customer to whom the Order belongs. Which two statements retrieve orders with an inclusive total that ranges between 100.00 and 2000.00 dollars? （）

SELECT customer_id, order_id, order_total FROM orders RANGE ON order _ total (100 AND 2000) INCLUSIVE;

SELECT customer_id, order_id, order_total FROM orders HAVING order _ total BETWEEN 100 and 2000;

SELECT customer_id, order_id, order_total FROM orders WHERE order _ total BETWEEN 100 and 2000;

SELECT customer_id, order_id, order_total FROM orders WHERE order_total>= 100 and <= 2000;

SELECT customer_id, order_id, order_total FROM orders WHERE order_total>= 100 and order_total <= 2000;

软件设计中模块划分应遵循的准则是（　　）。

A、低耦合低内聚

B、高耦合高内聚

C、低耦合高内聚

D、内聚与耦合无关