正确答案: D

+100°

题目：在标准条件下，测定某旋光性物质的比旋光度时，测量管长度为250 mm，样品浓度为l00 mg·mL-1，测得旋光度为+25℃,该物质的比旋光度是

解析：D

查看原题 点击获取本科目所有试题

举一反三的答案和解析：

[多选题]我国对单个企业的公私合营在利润分配上实行“四马分肥”，其内容包括

国家所得税

企业公积金

工人福利费

资方红利

解析：ABCD

[单选题]心血不足之心悸的临床特点是

心悸头晕,面色不华

[单选题]中共十四大明确我国经济体制改革的目标是

建立社会主义市场经济体制

[多选题]下列药物中,入汤剂需要先煎的是

龟甲

石决明

生石膏

解析：ACD

[单选题]

TRAb

解析：123.答案：B

[单选题]根据下列文章，回答31～35题。In the early 1960s Wilt Chamberlain was one of only three players in the National Basketball Association （NBA） listed at over seven feet. If he had played last season, however, he would have been one of 42. The bodies playing major professional sports have changed dramatically over the years, and managers have been more than willing to adjust team uniforms to fit the growing numbers of bigger, longer frames.

illustrate the change of height of NBA players.

[单选题]支气管哮喘患者剧烈咳嗽后突然出现气急、胸闷、大汗、呼吸困难、烦躁不安等症状，应考虑

自发性气胸