使用OutlookExprEss可以发送的文件类型有()。
A、文本文件
B、程序文件
C、图片文件
D、声音文件
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Evaluate the following statements: CREATE TABLE purchase_orders (po_id NUMBER(4), po_date TIMESTAMP, supplier_id NUMBER(6), po_total NUMBER(8,2), CONSTRAINT order_pk PRIMARY KEY(po_id)) PARTITION BY RANGE(po_date) (PARTITION Q1 VALUES LESS THAN (TO_DATE(?1-apr-2007?d-mon-yyyy?), PARTITION Q2 VALUES LESS THAN (TO_DATE(?1-jul-2007?d-mon-yyyy?), PARTITION Q3 VALUES LESS THAN(TO_DATE(?1-oct - 2007?d-mon-yyyy?), PARTITION Q4 VALUES LESS THAN (TO_DATE(?1-jan-2008?d-mon-yyyy?)); CREATE TABLE purchase_order_items (po_id NUMBER(4) NOT NULL, product_id NUMBER(6) NOT NULL, unit_price NUMBER(8,2), quantity NUMBER(8), CONSTRAINT po_items_fk FOREIGN KEY (po_id) REFERENCES purchase_orders(po_id)) PARTITION BY REFERENCE(po_items_fk); What are the two consequences of the above statements?()
APartitions of PURCHASE_ORDER_ITEMS have system-generated names.
BBoth PURCHASE_ORDERS and PURCHASE_ORDER_ITEMS tables are created with four partitions each.
CPartitions of the PURCHASE_ORDER_ITEMS table exist in the same tablespaces as the partitions of the PURCHASE_ORDERS table.
DThe PURCHASE_ORDER_ITEMS table inherits the partitioning key from the parent table by automatically duplicating the key columns.
EPartition maintenance operations performed on the PURCHASE_ORDER_ITEMS table are automatically reflected in the PURCHASE_ORDERS table.
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用于配置交换机或路由器的concole线缆类型为?()
A、直通缆
B、交叉缆
C、反转线
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下列各类服务系统中,没有提供多人键盘讨论的命令或服务的系统是()。
A、Linux系统
B、ICQ系统
C、BBS
D、Web系统
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Which operator can be used with a multiple-row subquery? ()
A、=
B、LIKE
C、BETWEEN
D、NOT IN
E、IS
F、<>
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患儿,男,13岁,因"高热2天"于当年7月20日收治入院,入院后第3天确诊为流行性乙型脑炎,下列对病人的做法正确的是()
A、严密隔离
B、呼吸道隔离
C、消化道隔离
D、接触隔离
E、虫媒隔离