根据计税标准不同，可以把税收划分为（）。
A.从价税
B.从量税
C.直接税
D.间接税
参考答案：A, B
30．It was the training that he had as a child________made him such a good pianist, received by teenagers as well as adults．
A．that
B．which
C．who
D．What
B-5固定液（）
A．多用于固定淋巴组织
B．多用于硬化神经组织的固定
C．适用于多种肽类抗原的固定，多用于免疫电镜研究
D．对糖原固定最好
E．适用于含脂肪的淋巴结、乳腺组织和脂肪瘤的固定
