【单选题】mp3:
A.
He has to sit at the computer for half an hour.
B.
He will stop to enjoy a coffee break.
C.
He will finish his report soon.
D.
He cannot afford to have a coffee break.
【简答题】各级国家机关、单位对所产生的国家秘密事项,应当按照有关的()。
【简答题】true or false statement 08 Unit 9 Task 8.mp3:
【多选题】下列哪些措施可以提高供配电系统自然功率因数
B.
正确选择变压器台数,可以切除季节性负荷用的变压器。
【多选题】微倾式水准仪应满足的几何条件有( )(多选)
【单选题】mp3:
A.
She moved to another city.
B.
She was tired of the job.
C.
The working condition was poor.
D.
The job was too challenging.
【多选题】微倾式水准仪应满足的几何条件有( )(多选)