()主要用来振实各种深度或厚度尺寸较大的混凝土结构和构件。
A.内部振动器
B.外部附着振动器
C.表面振动器
D.振动台
参考答案:A
100BASE-TX网络采用的物理拓扑结构为______。
A.总线型
B.星型
C.环型
D.混合型
Theophylline ethylenediamide is administered to a client with COPD. The nurse knows that the medication is for which of the following purpose
A.To reduce bronchial secretions.
B.To relax bronchial smooth muscle.
C.To strengthen myocardial contractions.
D.To decrease alveolar elasticity.