【单选题】
受弯构件正截面承载力中,对于双筋截面,下面哪个条件可以满足受压钢筋的屈服()。
①
<imgwidth="57"height="24"v:shapes="_x0000_i1059"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image004.gif">
②
<imgwidth="57"height="24"v:shapes="_x0000_i1060"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image054.gif">
③
<imgwidth="51"height="25"v:shapes="_x0000_i1061"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image056.gif">
④
<imgwidth="51"height="25"v:shapes="_x0000_i1062"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image058.gif">
【单选题】
对于永久荷载效应对结构构件的承载力不利的情况,若永久荷载效应在极限状态设计表达式中起来控制作用是,荷载的分项系数取为()
①
<imgwidth="56"height="24"v:shapes="_x0000_i1030"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image012.gif">,<imgwidth="56"height="25"v:shapes="_x0000_i1031"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image014.gif">
②
<imgwidth="65"height="24"v:shapes="_x0000_i1032"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image016.gif">,<imgwidth="56"height="25"v:shapes="_x0000_i1033"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image014.gif">
③
<imgwidth="54"height="24"v:shapes="_x0000_i1034"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image018.gif">,<imgwidth="54"height="25"v:shapes="_x0000_i1035"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image020.gif">
④
<imgwidth="56"height="24"v:shapes="_x0000_i1036"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image012.gif">,<imgwidth="54"height="25"v:shapes="_x0000_i1037"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image023.gif">
【单选题】
混凝土各种强度标准值之间的关系是( )
①
<imgwidth="23"height="24"v:shapes="_x0000_i1047"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image038.gif">><imgwidth="27"height="24"v:shapes="_x0000_i1048"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image040.gif">><imgwidth="21"height="24"v:shapes="_x0000_i1049"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image042.gif">
②
<imgwidth="27"height="24"v:shapes="_x0000_i1050"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image040.gif">><imgwidth="21"height="24"v:shapes="_x0000_i1051"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image042.gif">><imgwidth="23"height="24"v:shapes="_x0000_i1052"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image038.gif">
③
<imgwidth="27"height="24"v:shapes="_x0000_i1053"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image040.gif">><imgwidth="23"height="24"v:shapes="_x0000_i1054"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image038.gif">><imgwidth="21"height="24"v:shapes="_x0000_i1055"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image042.gif">
④
<imgwidth="21"height="24"v:shapes="_x0000_i1056"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image042.gif">><imgwidth="23"height="24"v:shapes="_x0000_i1057"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image038.gif">><imgwidth="27"height="24"v:shapes="_x0000_i1058"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image040.gif">
【单选题】
按承载力极限状态计算的表达式为:
①
<imgwidth="95"height="24"v:shapes="_x0000_i1042"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image030.gif">
②
<imgwidth="107"height="24"v:shapes="_x0000_i1043"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image032.gif">
③
<imgwidth="99"height="24"v:shapes="_x0000_i1044"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image034.gif">
④
<imgwidth="99"height="24"v:shapes="_x0000_i1045"src="http://wljy.whut.edu.cn:80/uploadfiles/word/GCJG1.files/image034.gif">
【单选题】
产品产量最优组合的条件是()
①
<imgwidth="112"height="74"src="http://wljy.whut.edu.cn:80/uploadfiles/word/QYJJF.files/QYJJF9297.png">
②
<imgwidth="112"height="74"src="http://wljy.whut.edu.cn:80/uploadfiles/word/QYJJF.files/QYJJF9400.png">
③
<imgwidth="105"height="74"src="http://wljy.whut.edu.cn:80/uploadfiles/word/QYJJF.files/QYJJF9503.png">
④
<imgwidth="107"height="74"src="http://wljy.whut.edu.cn:80/uploadfiles/word/QYJJF.files/QYJJF9606.png">
【单选题】
在下列生产函数中,哪个生产函数是规模收益递增的(A)。
①
<imgwidth="150"height="38"src="http://wljy.whut.edu.cn:80/uploadfiles/word/QYJJF.files/QYJJF5695.png">
②
<imgwidth="153"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/QYJJF.files/QYJJF5817.png">
③
<imgwidth="134"height="38"src="http://wljy.whut.edu.cn:80/uploadfiles/word/QYJJF.files/QYJJF5920.png">
④
<imgwidth="175"height="44"src="http://wljy.whut.edu.cn:80/uploadfiles/word/QYJJF.files/QYJJF6043.png">