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女，28岁，1-0-0-1，服用复方炔诺酮片避孕，于月经第20天时出现阴道出血，量同月经量
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举一反三
【单选题】如果对选课表中学生的选课成绩限定在0~100这个输入范围,应使用( )约束。
A.
PRIMARY KEY
B.
FOREIGN KEY
C.
UNIQUE
D.
CHECK
【单选题】Comparatively speaking, the solution part is _____ the problem part in problem-solution order.
A.
less important than
B.
as important as
C.
none of the above
D.
more important than
【单选题】● When a large packet wants to travel through a network whose MTU is too small, one solution is to allow routers to break up the packet into （）. （）
A.
messages
B.
frames
C.
fragments
D.
bits
【单选题】Well, let’s put our heads together and find ___to the problem。
A.
an answer
B.
a solution
C.
a way
D.
a method
【单选题】A ______ to this problem is expected to be found before long.
A.
result
B.
response
C.
settlement
D.
solution
【单选题】Telecommuting——substituting the computer for the trip to the job-has been ______ a solution to all kinds of problems related to office work.
A.
hailed as
B.
drawn out
C.
born out
D.
lodged in
【单选题】如果对选课表SC中学生的选课成绩grade限定在0~100这个输入范围，应使用（ ）约束。
A.
PRIMARY KEY
B.
FOREIGN KEY
C.
UNIQUE
D.
CHECK
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