According to a growing number of experts, it is already technically ______ to construct a
A. practical
B. flexible
C. feasible
D. beneficial
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It is probably both that he is going to the meeting on time ______ by the morning traffic
A. and that he might be delayed
B. or that he might be delayed
C. and he might be delayed
D. otherwise that he might be delayed
根据《建筑物防雷设计规范》规定,防雷接地装置的冲击接地电阻不应大于()n。
A. 10
B. 20
C. 30
D. 50
M: Oh, don't worry. I was a bit late, too.
Why was the woman late?
A. She forgot the time.
B. She forgot the place.
C. She slipped on the ground and hurt herself.
D. She was talking with the man's secretary and forgot the time.
在机械设备结构可靠性设计要点中,()是指将若干功能相同的零组部件作为备用机构,当其中某个零组部件出现故障时,备用机构马上启动工作,使机器仍盲S保持正常工作。
A. 确定零件合理的安全系数
B. 冗余设计
C. 简单化和标准化设计
D. 结构安全设计