氯沙坦的降压机制
A．奎尼丁B．利多卡因C．普萘洛尔D．维拉帕米E．阿托品
参考答案：E
Although the situation was tough during the economic crisis now things are beginning to ________.
A．look up
B．keep up
C．set up
D．build up
空腹或餐后8h上腹部仍有振水音，应考虑
A．急性胃肠炎B．胃溃疡出血C．幽门梗阻D．肠梗阻E．大量腹水
