急性化脓性腹膜炎下列哪项不是手术指征
A.无局限趋势的弥漫性腹膜炎B.腹腔内原发病严重C.8~12小时非手术治疗症状体征加重D.腹膜炎伴有休克E.原发性腹膜炎
参考答案:E
用所给动词的正确形式填空.
1. Jack decided _____ (work) hard this term.
2. When he arrived at home, it began _____ ( rain).
3. Can you _____ (work) out your math problem?
4. They must _____ (surprise) to see the dirty room.
5. Stop _____ (walk), let's have a rest.
某一重组DNA(6.2kb)的载体部分有两个SmaI酶切位点。用SmaI酶切后凝胶电泳上出现四条长度不同的带子,其长度总和与已知数据吻合,该重组分子插入片段上的SmaI酶切位点共有()
A.4个
B.3个
C.2个
D.至少2个