当项目目标失控时,首先应考虑()方面存在的问题。
A.组织
B.管理
C.技术
D.经济
参考答案:A
_______ not to drive after drinking, some drivers are still trying their luck, which is really dangerous. [ ]
A. Being reminded
B. To remind
C. Having reminded
D. Reminded
将甲烷及C4以上重质烃类从天然气中分出,常用的分离方法有()
A、加压分离
B、油吸收法
C、深冷分离法
D、超吸附法