题型:问答题 简答题 Soon, more of the information we receive via the Internet could come (31) in digital wrappers. Wrappers are made up (32) software code that’s targeted to do specific things with the data (33) within them, such as helping to define queries for search engines. They also keep (34) from (35) access to that code.A.gainB.gainedC.gainsD.gaining 查看答案
题型:问答题 简答题 糖皮质激素抗休克的主要作用及用途是()。A.对抗乙酰胆碱引起的平滑肌痉挛。用于外周血管痉挛,提高血压,改善微循环B.同时扩张小动脉和小静脉作用迅速。用于心源性休克,心排血量低而肺静脉压高者C.阻断α受体兴奋,保护细胞内溶酶体,增强心肌收缩力,增强血管活性药物作用D.与利尿药物合用,避免因减负荷作用导致体液潴留E.增强正性肌力,用于利尿药无效的顽固性心衰 查看答案
题型:问答题 简答题 果蝇的体细胞含有8条染色体。现有一个果蝇体细胞,它的每条染色体的DNA双链都被32P标记。如果把该细胞放在不含32P的培养基中培养,使其连续分裂,那么将会在第几次细胞分裂中出现每个细胞的中期和后期都有8条被标记的染色体()A.第1次B.第2次C.第3次D.第4次 查看答案