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问题 单项选择题

鉴定中药质量的纯度和品质优良的药材的首选方法是

A．动物体的某一部分
B．动物体某些部分的加工品
C．动物的排泄物
D．动物除去内脏的干燥体
E．动物的干燥全体

答案

参考答案：D

单项选择题

一号线地铁列车（）是指6人/m2。

A.空载

B.座席载客

C.定员载客

D.超员载客
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单项选择题

Which of the following is the reason that the metacentric height is a valid measure of only the initial stabilit?（）.

A.The metacenter does not remain in the same position for large angles of inclination

B.The center of gravity shifts due to inclination

C.The center of gravity shifts above the metacenter as the vessel is inclined

D.The mean draft will change as the vessel is inclined
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