虫媒花一般（    ）。
A、花大而显著
B、昼夜开放
C、香味浓烈
D、具特殊气味

单项选择题2. From which one of the following analytical techniques, the diagram shown below would be obtained? a. Infrared spectroscopy b. High performance liquid chromatography c Mass spectrometry d. X-ray Fluorescenc

多项选择题按结构划分可将面试类型划分为以下几种类型？