抑制胃酸分泌作用最强的是
A.西咪替丁B.法莫替丁C.硫糖镁D.奥美拉唑E.哌仑西平
参考答案:D
In some countries citizens are ______ to vote, and if they don’t they get fined.
A.demanded
B.suggested
C.prevented
D.required
当发生由油雾燃烧而产生的烟囱冒火时,正确的应急处理措施是()。
A.降低柴油机负荷
B.停车检查
C.保持原负荷运转
D.A或B