胃脘痛应注意哪些
A.忌暴饮暴食
B.不宜食油腻食物
C.尽量避免浓茶、咖啡、辛辣
D.慎用水杨酸、激素类药物
E.保持精神乐观,避免过劳
参考答案:A,C,D,E
密接式钩缓装置的水平转角为()。
A.≥±17°
B.≥±4°
C.≤±17°
D.≤±4°
In a certain formula, p is directly proportional to s and inversely proportional to r. If p=1 when r=-0.5 and s=2,what is the value of p in terms of r and s ?()
A.A
B.B
C.C
D.D
E.E