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发布时间:2023-12-16 22:26:33

[简答题]fuel cell

更多"fuel cell"的相关试题:

[填空题]Hydrogen-powered fuel-cell vehicles that need no oil and emit no______will be developed by the Department of Energy and automakers Ford, General Motors and DaimlerChrysler.
[简答题]NKT cell
[简答题]parietal cell
[简答题]dust cell
[简答题]Kupffer cell
[简答题]Purkinje cell
[简答题]plasma cell
[单项选择]
Cell Phone Lets Your Secret out

Your cell phone holds secrets about you. Besides the names and (51) that you’ve programmed into it, traces of your DNA linger on the device, according to a new study.
DNA is genetic material that (52) in every cell. Like your fingerprint, your DNA is unique to you— (53) you have an identical twin. Scientists today routinely analyze DNA in blood, saliva, or hair left (54) at the scene of a crime. The results often help detectives identify (55) and their victims. Your cell phone can reveal more about you (56) you might think.
Meghan J. McFadden, a scientist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cell phone and later dropped the (57) . This made her wonder whether traces of DNA lingered on cell phones—even when no blood was involved. (58) A. about
B. in
C. for
D. behind

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