下列有关氢氧化钠的叙述，正确的是（ ） A．常用于改良酸性土壤 B．将氢氧化钠固

表达FcεRⅠ的细胞是()

A．B细胞

B．T细胞

C．嗜中性粒细胞

D．嗜碱性粒细胞

E．肥大细胞

短文改错

     Nowadays women are playing a much more important part in society. More and more women are

working like teachers, scientists and even leader. Almost all jobs that were used to be done by men are

done perfectly well by women. Women are no longer looking down upon in society. With the changes in

their social role, women's position in the family have been improved as well. It's hard to see the phenomen

on which the wife is busy while the husband is sitting in an armchair, watching TV. In spite of all these

changes, the great number of men still guard his rights. They thought of women as incapable creatures. So

metimes few women are allowed attend important meetings. This is the problem we should try to solve

now.

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下列哪项属于刺痛的特点（）

A.痛处固定不移

B.局部拒按

C.疼痛持续不已

D.入夜尤甚

E.遇热则重

可降低粮食中B（a。）P含量的方法是（）

A.日晒

B.加水搓洗

C.加醋浸泡

D.高压蒸煮20～30分钟

E.放置1年后再食用

计算题：汽包压力表读数为98千克/厘米2，当地大气压计读数为765毫米汞柱，求汽包内工质的绝对压力（用兆帕表示）。