解放以前，我国电力工业基础十分薄弱，装机少，送变电工程电压低，几乎没有独立的电力设计队伍。
参考答案：对
It was Sarah's sister who she had great respect for that tricked her ________ carrying drugs. [ ]
A. in
B. to
C. into
D. from
集体合同的履行应遵行的原则有( )。
A．亲自履行原则
B．协作履行原则
C．相互监督原则
D．全面履行原则
