Why will the guest's friends be late?Because of a heavy _____________________.
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What is the guest's last name?
How many are there in their party?
A. 6
B. 7
C. 8
D. 9
What kind of drink does the guest order at first?
A jasmine tea
B. An orange juice
C. A cold water
D. A hot water
在MATLAB中计算行列式的函数是( )
A. rem( )
B. sqrt( )
C. det( )
D. mod( )