心输出量能随机体代谢需要而增加的能力,称为()
A.射血分数
B.心率贮备
C.搏出量贮备
D.心脏做功
E.心力贮备
参考答案:E
—Which of the two jackets will you take, Jane?
—I’ll take ________. I have spent all my money buying the books.
A. both B. either C. neither
销毁时应破坏食品原有的形态包括()。
A.破坏包装
B.捣碎
C.染色
D.涂改标签