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单选题
lisa is writing a formula to determine the number of elements in a list. she wants to ensure that a value is returned, even if the value her function is evaluating turns out to be a null string . which one of the following can she so to accomplish this ?（）
A
use a defaule formula of 1
B
use @elements and add 1 to the total
C
use the @count function instead of @elements
D
use @texttotime to ensure that all strings arte converted to date-time values
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更多 “单选题lisa is writing a formula to determine the number of elements in a list. she wants to ensure that a value is returned, even if the value her function is evaluating turns out to be a null string . which one of the following can she so to accomplish this ?（）A use a defaule formula of 1 B use @elements and add 1 to the total C use the @count function instead of @elements D use @texttotime to ensure that all strings arte converted to date-time values ” 相关考题
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use a defaule formula of 1 B
use @elements and add 1 to the total C
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use @texttotime to ensure that all strings arte converted to date-time values
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the cause of routing errors.B
the number of switches on the network.C
the number of users on the network.D
where network latency will occur.
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