我国刑法对溯及力之规定所体现的原则是（）。
A．从旧原则
B．从新原则
C．从旧兼从轻原则
D．从新兼从轻原则
参考答案：C
解析：
从旧兼从轻原则。
My cousin in Beijing University at present, after which she will work in Beijing.
A．educated
B．has been educated
C．is being educated
D．was educated
作为防冻保温层大于（）mm时，应分层进行。
A.50
B.75
C.90
D.100
