题目内容

In Figure 2, at which of the following wavelengths does the rate of photosynthesis exceed

A. 400 nm
B. 430 nm
C. 630 nm
D. 700 nm

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Based on Figure 3, for a given seismograph, the time elapsed between the arrival of the first p-waves and the arrival of the first s-waves from an earthquake focus 10,500 km away would most likely be:

A. less than 5 min.
B. between 5 min and 7 min.
C. between 8 min and 10 min.
D. more than 10 min.

过滤器由本体、管道、滤网等组成，其典型泄漏情况和裂口尺寸分别取管径的20u/o～1000/0和()。

喷托维林既有中枢镇咳作用又有外周镇咳作用。()

阿司匹林和糖皮质激素长期使用都可诱发消化性溃疡。()