摄像机反复重启,该故障90%以上的原因是因为供电不足造成。()
A. 正确
B. 错误
储蓄与保险一样,都具有以现在积累解决以后问题的特点,但是与保险不同的是,储蓄属于()
A. 互助行为
B. 他助行为
C. 自助行为
D. 群体行为
锁骨下静脉穿刺时体位是()
A. 半卧位
B. 平卧位
C. 去枕平卧位
D. 去枕平卧颈部近中位(左转45º)
E. 去枕头低位(15º-30º)
In the ship construction portfolio,materials which do not conform to ASTM or ABS specifications must also include the().
A. chemical and physical properties of the material
B. name of the alternative standard or specification
C. the ASTM or ABS specification the material approximates
D. manufacturer or origin of the material