能升高血糖的降压药是（）
A.肼屈嗪
B.拉贝洛尔
C.哌唑嗪
D.甲基多巴
E.二氮嗪
参考答案：E
He has known the truth. Therefore, there is no ____ to keep it a secret
A．chance
B．doubt
C．possible
D．likely
直流电源电压波纹系数应大于2%。
