测量值和真实值之间总会有差别,这就是 ________ ,我们不能消灭_________,但应尽量___________
误差;误差;减小
其首选方剂为
A.补中益气汤
B.归脾汤
C.逍遥散
D.调经散
E.朱砂安神丸
Now that you’ve gotten a little more confident, we’re going to give you the opportunity to practice "without the training wheels." When you want to check your work, you can turn to the solutions at the end. If you aren’t familiar with some of the mathematical concepts, make a note to pay particular attention to that chapter in this book; this practice set covers a wide range of topics tested on the GMAT. On all data sufficiency problems, the answer choices are the same (as you’ve learned). We’ve put them here for your reference. A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient.
What is the length of a side of a certain cube (1) The volume of the cube is 27. (2) The surface area of the cube is 54.