一切容易碰到的裸露的电气设备及其带动的外露的转动和传动部位，都必须加装防护或遮栏，防止碰触危险。
参考答案：对
A first-time mother-to-be is in the labor room, her husband at her bedside. The client states that her contractions began 6 hours ago. Which of the following assessment findings would confirm that the client is in true labor
A. Discomfort located chiefly in the abdomen.B. Constant intensity of contractions.C. Contractions occurring every 10 to 15 minutes and lasting 20 to 30 seconds.D. Cervix that is 100% effaced and 2 cm dilate
读1990～2010年天山地区湖泊数量和面积变化表，完成下列问题。
1990～2010年天山地区湖泊数量和面积变化
影响湖泊20年来变化的原因最可能是（）
A.地壳运动
B.火山活动
C.水利工程
D.气候变化
