登山时不要总往高处看,尤其是登山之初,因为你的双腿还没有习惯攀登动作,往上看往往使人产生一种疲惫感。一般说,向上攀登时,目光保留在自己前方()处最好。
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As an experienced network administrator, you are aware of the knowledge that it is unnecessary to configure complex overlay network topologies while applying Cisco Wide Area Application Services (WAAS) technology. What is most probably the reason for that?()
A. Content pre-positioning
B. Automatic discovery of Cisco WAEs
Comprehensive logs, reports, and graphs
D. Remote scheduling of software distributio
检修中,轴瓦的轴向窜动一般为()。
A. 0.05~0.10mm
B. 1.10~0.20mm
C. 0.20~0.30mm
D. 0.30~0.40mm
辛普森行星齿轮机构由()个制动器组成。
A. 1
B. 2
C. 3
D. 4