教育储蓄的对象为在校（）的学生。
A. 小学四年级（含）
B. 小学三年级（含）
C. 小学二年级（含）
D. 小学一年级（含）
If two mooring lines are to be placed on the same bollard，which method is BEST?（）.
A. Place the eye from the forward line on the bollard and then place the eye from the second line directly over the first
B. It makes no difference how the lines are placed
C. Place the eye from either line on the bollard，and then bring the eye of the other line up through the eye of the first，and place it on the bollard
D. Place both eyes on the bollard，in any manner，but lead both lines to the same winch head on the vessel and secure them on the winch
粉尘能引起人的呼吸道、消化系统、皮肤、眼睛以及神经系统的疾病。
A. 正确
B. 错误
下列哪项试验可使颈椎间隙增宽，椎间盘突出的程度减轻，症状暂时缓解（）
A. 颈牵引试验
B. 椎间孔挤压试验
C. 椎动脉压迫试验
D. 转身看物试验
E. 深呼吸试验
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