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【简答题】
电子商务系统的安全问题主要包括 物理安全 、 网络安全 、 系统软件安全 、 人员管理安全 和电子商务立法。
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举一反三
【单选题】A prefix or suffix is underlined in each item below. Choose the correct for the prefix or suffix. in distinct
A.
badly
B.
wrongly
C.
not
D.
easily
【单选题】A prefix or suffix is underlined in each item below. Choose the correct for the prefix or suffix. sens ible
A.
in favor of
B.
able to be
C.
full of
D.
quality of
【简答题】The professor briefly explains how black ice forms. Indicate whether each sentence below is part of the process. For each sentence, click in the correct box.
【单选题】A prefix or suffix is underlined in each item below. Choose the correct for the prefix or suffix. companion ship
A.
one who
B.
full of
C.
state of being
D.
without
【单选题】Which item below is easier to read and understand?
A.
The weather at the North Pole is truly extreme. The average winter temperature is more than 20 degrees below zero.
B.
The weather at the North Pole is truly extreme. First of all, the average winter temperature is more than 20 degrees below zero.
【单选题】根据简化眼的参数,眼前 3 m 远处,宽 1 mm 的“ E”字笔画在视网膜上像的大小约为
A.
1 μ m
B.
2 μ m
C.
5 μ m
D.
8 μ m
E.
10 μ m
【单选题】A prefix or suffix is underlined in each item below. Choose the correct for the prefix or suffix. trans form
A.
across
B.
above
C.
under
D.
against
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