Q: How many Black Friday shoppers were reported to go to the shops at midnight this year?
A. 24 percent.
B. 37 percent.
C. 9.5 percent.
D. 23.5 percent.
查看答案
Q: What can we learn about the 15-year-old Jenny?
A. She and her cousins went back home at midnight.
B. She liked the traditional 4 a.m. Black Friday openings better.
C. She preferred midnight shopping to early morning shopping.
D. She and her cousins got up very early to buy discounted items.
在支路电流法分析中，用基尔霍夫电流定律列节点电流方程时，若电路中有N个结点，应列写的结点电流方程数为 ()个。
A. N+1
B. N
C. N-1
D. 支路数
阻断胃壁细胞H+泵的抗消化性溃疡药是
A. 米索前列醇
B. 奥美拉唑
C. 丙谷胺
D. 丙胺太林
E. 西咪替丁
用于预防哮喘发作的具有抗过敏作用的平喘药是______。
微信支付 
支付宝支付