设直线，ι：x/0=y/2=z/1=z/1，则直线ι
A. 过原点且平行于x轴
B. 不过原点但平行于x轴
C. 过原点且垂直于x轴
D. 不过原点但垂直于x轴
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当α＜x＜b时，f'(x)＜0，f'(x)＞0。则在区间(α，b)内曲线段y=f(x)的图形
A. 沿x轴正向下降且为凹
B. 沿x轴正向下降且为凸
C. 沿x轴正向上升且为凹
D. 沿x轴正向上升且为凸
Which of the following statements is not true？
A. People who want to take their own lives often disguise their feelings.
B. It is difficult to describe what kind of people tend to commit suicide.
C. Suicide has been a problem in most cities since ancient times.
D. People who commit suicide all share certain characteristics.
对无法查明原因的现金短缺，企业正确的处理是（）。
A. 计入管理费用的借方
B. 计入管理费用的贷方
C. 计入营业外收入的借方
D. 计入营业外收入的贷方
委托加工物资收回后，用于连续生产应税消费品的，委托方应将受托方代收代缴的消费税计入委托加工物资的成本。（）
A. 正确
B. 错误
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