施工及构件加工过程中的噪声主要包括机械性噪声、空气动力性噪声、爆炸性噪声和人为性噪声。
参考答案：错
Our grade held the grown-up ceremony on March, 21st, _____ I have been well aware of my responsibility
for our society. [ ]
A. when
B. during which
C. since then
D. since when
治疗洋地黄中毒伴缓慢性心律失常时宜选用（）
A.苯妥英钠
B.阿托品
C.普萘洛尔
D.呋塞米
E.利多卡因
