题目内容

热拌沥青混合料面层摊铺碾压()。

A. 热拌沥青混合料不应采用轮胎式沥青摊铺机摊铺碾压
B. 摊铺速度宜控制在1~3m/min的范围内
C. 压实应按初压、复压、终压包括成型三个阶段进行
D. 热拌沥青混合料的最低摊铺温度应根据沥青和沥青混合料种类、压路机、气温、层厚等因素经试压确定

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煤矿每年至少组织()次应急演练。

A. 1
B. 2
C. 3

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
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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.

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