材质为碳素钢、不锈钢及铜的管道、管件和阀门，宜用（）用作为脱脂用的溶剂。
A.煤油
B.工业酒精
C.二氯乙烷
D.四氯乙烷
参考答案：D
.--- I thought you were going to call on me last night.
--- Sorry, I __________. But I had to finish the report.
A．would go
B．would have
C．would rather
D．would better
关于糖化Hb描述正确的是 （）
A.糖化Hb的浓度与红细胞寿命关系不大
B.受每天葡萄糖波动的影响
C.葡萄糖通过酶促糖基化反应与血红蛋白结合形成
D.反映的是过去8～10周的平均血糖浓度
E.是反映近期血糖控制效果的可靠指标
