深基坑开挖的原则是“分层开挖,先撑后挖”
参考答案:对
最符合隔姜灸的施灸程度的是()。
A.皮肤出现轻微水泡
B.皮肤出现大片发红
C.皮肤如正常颜色
D.皮肤出现红晕而不起泡
E.皮肤起大泡
If you are forced to abandon ship in a liferaft,your course of action should be to().
A.remain in the immediate vicinity
B.head for the nearest land
C.head for the closest sea-lanes
D.let the persons in the boat vote on what to do