在对钢筋混凝土偏心受压构件作大小偏心受压判断时,下列何项论述正确()
A. 轴向力作用在截面范围内时为小偏心受压,反之为大偏心受压
B. 轴向力作用在截面范围外时为小偏心受压,反之为大偏心受压
Cη.ei≤0.3h0。时为小偏心受压,反之为大偏心受压
D. 相对受压区高度ζ≤ζb时为大偏心受压,反之为小偏心受压
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若一组标准立方体混凝土试块的强度等级被评为C30,则该组混凝土试块的强度应满足的条件是()。
A. 该组试块的极限抗压强度最低值不低于30N/mm2
B. 该组试块的极限抗压强度低于30N/mm2,概率不大于5%
C. 该组试块的极限抗压强度平均值不低于30N/mm2
D. 该组试块的极限抗压强度标准值不低于30N/mm2
If you were to begin a new job tomorrow, you would bring with you some basic strengths and weaknesses. Success or (62) in your work would depend, to (63) great extent, (64) your ability to use your strengths and weaknesses to the best advantage. (65) the utmost importance is your attitude. A person (66) begins a job convinced that he isn’t going to like it or is (67) that he is going to fail is exhibiting a weakness which can only hinder his success. On the other hand, a person who is secure (68) his belief that he is probably as capable (69) doing the work as anyone else and who is willing to make a cheerful attempt (70) it possesses a certain strength of purpose. The chances are that he will do well. (71) the prerequisite skills for a particular job is strength. Lacking those skills is obviously a weakness. A book-keeper who can’t add or a carpenter who can’t cut a straight line with a saw (72) hopeless cases. This book has been designed to help you capitalize (73) the strength and overcome the (74) that you bring to the job of learning. But in order to measure your development, you must first (75) stock of where you stand now. (76) we get further along in the book, we’ll be (77) in some detail with specific processes for developing and strengthening (78) skills. However, (79) begin with, you should pause (80) examine your present strengths and weaknesses in three areas that are critical to your success or failure in school: your (81) , your reading and communication skills, and your study habits. A) exceptB) butC) forD) on
If you were to begin a new job tomorrow, you would bring with you some basic strengths and weaknesses. Success or (62) in your work would depend, to (63) great extent, (64) your ability to use your strengths and weaknesses to the best advantage. (65) the utmost importance is your attitude. A person (66) begins a job convinced that he isn’t going to like it or is (67) that he is going to fail is exhibiting a weakness which can only hinder his success. On the other hand, a person who is secure (68) his belief that he is probably as capable (69) doing the work as anyone else and who is willing to make a cheerful attempt (70) it possesses a certain strength of purpose. The chances are that he will do well. (71) the prerequisite skills for a particular job is strength. Lacking those skills is obviously a weakness. A book-keeper who can’t add or a carpenter who can’t cut a straight line with a saw (72) hopeless cases. This book has been designed to help you capitalize (73) the strength and overcome the (74) that you bring to the job of learning. But in order to measure your development, you must first (75) stock of where you stand now. (76) we get further along in the book, we’ll be (77) in some detail with specific processes for developing and strengthening (78) skills. However, (79) begin with, you should pause (80) examine your present strengths and weaknesses in three areas that are critical to your success or failure in school: your (81) , your reading and communication skills, and your study habits. A) HaveB) HadC) HavingD) Had been
下列选项中,不是巨大卵巢肿瘤摘除后的并发症的是()
A. 诱发急性肺水肿
B. 血压骤降
C. 心率增快
D. 左心衰竭
E. 右心衰竭