选择题：约翰?霍兰德将人的职业性向分为六种类型，其中表现为顺从、高效、实际、缺乏想象力、缺乏灵活性等个性特征

题目内容：

约翰?霍兰德将人的职业性向分为六种类型，其中表现为顺从、高效、实际、缺乏想象力、缺乏灵活性等个性特征的人的职业性向属于（） "A 企业性向
B 现实性向
C 社会性向
D 常规性向
"

参考答案：

_______ his sister, Jack is quiet and does not eas

_______ his sister, Jack is quiet and does not easily make friends with others.

Professor Allington asks his students to read the newspapers to keep ____ of cur

3.50ml0.2mol/LAlCl3和50ml0.1mol/LCaCl2溶液相混合后，Cl-的浓度是 () A.0.5mol/L B.0.4mol/

[单选题,0.7分] 属于有明显屈服点的钢筋有 A.冷拉钢筋 B.钢丝； C.热处理钢筋 D.钢绞线。