创新能力评价原则有以下等()。
A.系统性原则
B.可操作性原则
C.科学性原则
D.定性与定量相结合的原则
参考答案:A, B, C, D
The voters were overwhelmingly against the candidate his proposals called for higher taxes.
A.who
B.whose
C.whom
D.which
()、锅炉灭火,说明6kV厂用电消失。
A.锅炉燃料性质发生改变
B.厂用电6kV母线电压指示回零
C.所有6kV电动机电流指示回零
D.电动机失电