最后贯入度是指打桩时最后______击桩的平均入土深度。( )
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一个网络计划( )
A. 有时可有多条关键线路
B. 只有一条关键线路
C. 有时没有关键线路
D. 关键线路是不可改变的
______ all our goodwill to see her through the hard time, Sarah declined politely.
A. [A] On
B. [B] At
C. [C] In
D. [D] For
新生儿感染性肺炎的治疗最关键的是
A. 吸氧
B. 保持呼吸道通畅
C. 注意保暖、合理喂养
D. 纠正水、电解质、酸碱平衡紊乱
E. 控制感染
The patient's intelligence has been ______ by a brain injury.
A. [A] spoiled
B. [B] marred
C. [C] impaired
D. [D] undermined