下列哪种胆汁酸是初级胆汁酸（）
A.甘氨石胆酸
B.甘氨胆酸
C.牛磺脱氧胆酸
D.牛磺石胆酸
E.甘氨脱氧胆酸
参考答案：B
You are assigned to be the project manager in the middle of the project. The project is within tolerances for the baseline, but the customer is not happy with the performance of the project. What is the FIRST thing you should do
A) Discuss it with the project team.B) Recalculate baselines.C) Renegotiate the contract.D) Meet with the customer.
目前我国的死亡率最高的三大疾病是（）、（）、（），这三者与不良的心理社会因素密切相关。
