多项选择题

系谱法的优点是 A. 基因稳定速度快 B. 容易追溯亲本 C. 简便易行 D. 不丢失优良性状

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多项选择题

作业成本法中，关于成本动因以下说法正确的是（）

A.成本动因包括资源动因和作业动因
B.成本动因的确定具有一定的主观性
C.成本动因一经确定，就不能改变
D.有些成本动因是无法定量衡量的

单项选择题

Gabriel Company views share buybacks as treasury stock. In its first treasury stock transaction, Gabriel purchased treasury stock for more than the price at which the stock was originally issued. What is the effect of the purchase of the treasury stock on each of the following?

Total paid-in capital
Retained earnings
a.
decrease
decrease
b.
decrease
no effect
c.
no effect
decrease
d.
no effect
no effect
A、Option A
B、Option B
C、Option C
D、Option D