车间应每月对《上道作业列车防护登记簿》进行检查签认。
查看答案
十一届三中全会上确立了中国社会主义市场经济体制改革目标。
A. 正确
B. 错误
Which of the following is the reason that the metacentric height is a valid measure of only the initial stability?（）.
A. The metacenter does not remain in the same position for large angles of inclination
B. The center of gravity shift due to inclination
C. The center of gravity shifts above the metacenter as the vessel is inclined
D. The mean draft will change as the vessel is inclinded
患儿，2岁，唇颊面浅凹状龋，探龋蚀较浅，疼痛（-）。患儿哭闹不合作。应选处理方法（）
A. 复合体充填
B. 玻璃离子充填
C. 氨硝酸银涂布
D. 氟化钠涂布
E. 氟化双氨银涂布
微信支付 
支付宝支付