强迫行为
参考答案:
指当事人反复去做他不希望执行的动作,如果不这样想、不这样做,他就会感到极端焦虑。
It was Martin Luther King's struggle ______ helped black Americans to get equal rights.
[ ]
A. which
B. that
C. who
D. as
按GB/T10058-1997《电梯技术条件》规定,υ≤0.63m/s的交流双速电梯,其平层准确度应在()范围内。
A、±15mm
B、±20mm
C、±30mm