题目内容

煤矿每年至少组织()次应急演练。

A. 1
B. 2
C. 3

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一般来说,企业的广告费属于()。

A. 变动成本
B. 混合成本
C. 约束性固定成本
D. 酌量性固定成本

条件编译命令只在编译时才有作用。

A. 正确
B. 错误

In your multitenant container database (CDB) containing pluggable database (PDBs), you granted theCREATE TABLE privilege to the common user C # # A_ADMIN in root and all PDBs. You execute thefollowing command from the root container:SQL > REVOKE create table FROM C # # A_ADMIN;What is the result?()

A. It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root only.
B. It fails and reports an error because the CONTAINER=ALL clause is not used.
C. It excludes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root and all PDBs.
D. It fails and reports an error because the CONTAINER=CURRENT clause is not used.
E. It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in all PDBs.

海图上的空白处表示该处水域无碍航物。

A. 正确
B. 错误

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