更多"W: Can we leave the lab now, teache"的相关试题:
[简答题]Now we can find almost everything we need online and have _______________(我们所购之物送上门).
[简答题]Up to now, we have not heard anything from you about the shipment of your Contract No. 8726 against our Order No. 645. No doubt there must have been some mason for the delay in shipment and we cabled you that we were extending the L/C to the end of Nov. We feel sum we shall soon be hearing from you about this business.
[填空题]What can you learn from stamps
We can learn many things about ______ from stamps.
[填空题]
Watching Microcurrents Flow
We can now watch electricity as it flows through even the tiniest circuits. By scanning the magnetic field generated as electric currents flow through objects, physicists have managed
(46) . The technology will allow manufacturers to scan microchips for faults, as well as revealing microscopic defects in anything from aircraft to banknotes.
Gang Xiao and Ben Schrag at Brown University in Providence, Rhode Island, visualize the current by measuring subtle changes in the magnetic field of an object and
(47) Their sensor is adapted from an existing piece of teclmology that is used to measure large magnetic fields in computer hard drives. "We redesigned the magnetic sensor to make it capable of measuring very weak changes in magnetic fields," says Xiao.
The resulting device is capable of detecting a current as weak as 10 microamperes, even when the wire is buried deep wit
[简答题]If you can supply the cargo we require, please accept this as our order.
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Don’t have time to read anymore Now you can get free, quick literature via email. More than 100,000 people open their email each day to read a chapter of a book, through Chapter-A-Day, an online book club created two years ago. It’s a free email service that provides a short daily reading for busy people, exposing them to literature they may not find on their own, inspiring some to recommit to the reading habit. About 550 public library systems representing over 3,000 branch libraries already have signed up to offer Chapter-A-Day. Via email, participants get about five minutes’ worth of reading every day. After three chapters are emailed, the installments stop, and those who want to keep reading can borrow the book at their public library or purchase it online. Chapter-A-Day has eight free book clubs, and sells thousands of books each month.
Chapter-A-Day started in 1999 when Suzanne Beecher, a lifelong book lover, realized how many of the women w
A. public libraries have become crowded with readers
B. Ms Beecher made much money for her software company
C. people begin to read very slowly and patiently
D. people cannot finish reading any book online
