题目内容
（请给出正确答案）
[多选题]
在工程项目竣工验收阶段，项目监理机构的主要工作任务有()。
A.督促施工单位及时整理各种文件和资料，受理单位工程竣工验收报告，并提出意见
B.根据施工单位的竣工报告，提出工程质量检验报告
C.对工程主要部位、主要环节及技术复杂工程进行检查
D.组织工程预验收，参加业主组织的竣工验收
E.在质量责任缺陷期间，监督和检查质量问题的处理结果
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A typical(66)language contains an applicative sub-language which approximates the mathematical abstractions of "timeless" functions applied to "spaceless" values, where the actual operation sequences and use of storage space during expression evaluation are organized behind the(67). In this setting, values are data structures of low volume, typically a few computer words or less, which means that an illusion of spacelessness can be realized by having(68)results during expression evalution stored at the discretion of the language implementation, and effecting parameter(69)and(70)operations through value copying.
A．imperative
B．mandatory
C．compulsory
D．voluntary
