【多选题】下列关于中华人民共和国主席的职权说法正确的是( )。
C.
代表中华人民共和国,进行国事活动,接受外国使节
D.
根据全国人民代表大会常务委员会的决定,派遣和召回驻外全权代表.
【单选题】为限制电压严重降低和防止系统电压崩溃,应采取( )措施。
A.
根据无功功率和电压水平的分析结果在系统中配置低电压减载装置;
D.
必要时设置自动限制电压降低的控制装置,作用于增发无功功率或减少无功功率的需求。
【单选题】_____ that quite a lot of people were out of work.
A.
So became serious the global economic crisis
B.
So serious became the global economic crisis
C.
So serious did the global economic crisis become
D.
Serious the global economic crisis became so
【简答题】经过需求分析后便要着手进行工作区子系统的初步设计。此工作的主要成果得到______________表和__________。
【单选题】— Did he realize the serious situation immediately? — No. It was quite a long time ________ he really realized it.
【单选题】The symptoms of influenza are quite similar to those of other more serious diseases.
【单选题】It was quite a long time ______ he really realized the serious situation.
【判断题】一端固定的杆件,受轴的外力作用,不必求出约束反力也可画出内力图。