当钢的导热性好、强度极限高、截面尺寸小时，允许的加热速度就大.
参考答案：对
对于法律溯及力的问题，我国刑法原则上采取（）原则。
A.从旧兼从轻原则
B.从新兼从轻原则
C.从旧原则
D.从新原则
Due to the shape of the sea anchor，the best way to haul it back aboard is by（）.
A.hauling in on the anchor line as you would any anchor
B.getting all hands to assist
C.its trip line
D.cutting the line，as you cannot haul it back in
