【简答题】The figure above shows the shape of a brick patio. If arc AB is a semicircle and ABCD is a square, what is the perimeter of the patio ? (1) The radius of the semicircle described by arc AB is 4. (2) T...
【单选题】The figure below shows the relative acceleration fac-tors for pepsin, an enzyme found in the stomach, andtrypsin, an enzyme found in the small intestine. Based on this figure and Figure2, one would be...
A.
more acidic.
B.
less acidic.
C.
equally acidic.
D.
less acidic for pepsin, but more acidic for trypsin.