* * B超最早可看见孕囊是停经后()。 A.2~3周 B.4~5周 C.6~7周 D. 发布时间:2017-06-09 21:42 │ 来源:www.tikuol.com 题型:单项选择题 问题: * * B超最早可看见孕囊是停经后()。A.2~3周B.4~5周C.6~7周D.8~9周E.10~11周
题型:单项选择题 根据句意及首字母提示完成单词。1. He is very w_____. He always does things without thinking carefully. 2. The story made us 1_____. 3. He had a bad grade in the English test. His father wasn't happy and b_____ him yesterday evening 4. Jim likes math. But Jack likes p_____.5. They don't agree with you. They have other v_____. 6. Lucy does her s_____ every day. 查看答案
题型:单项选择题 展示活动使用的设备抵达安装现场后,首先应该()。A、对金属构件进行清洁B、挫磨表面C、切削、清洗毛坯和其它零部件D、挫磨金属构件中的镗孔和铰孔E、对金属构件表面的灰尘、涂料和防护油进行处理 查看答案