分别称各级筛盘中的沙量,或由小到大逐级累计称沙量。当累计总沙量与试样沙量之差超过()%时,应用备样重新分析。
A、4
B、3
C、2
参考答案:C
有关 * * 涂片的陈述.正确的是()。
A.只适用于已婚妇女
B.必须借助窥阴器取材
C.标本取自 * * 穹隆部
D.未婚者可以采用棉签采样
E.标本取自 * * 口
根据以下提示,结合事例,用英语写一篇短文。
Encouragement from a friend plays a very important role in motivating you to solve the problems you are facing. It helps you fight the difficulties and get out of an unfavorable situation you are stuck in.
注意:
(1)无须写标题,文章开头已经给出,不得照抄英语提示语;
(2)除诗歌外,文体不限;
(3)词数为120左右。
Encouragements can serve as a ray of hope during difficult times.
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