1.Themayordecidedto________hisspeechinordertoleaveenoughtimeforhisaudiencetoraisequestions. 2.Itwasreportedthattherewasavehiclemissingevery20secondsinthe US .Ifthetrendscontinue,expertspredictannualvehicletheftscould________twomillion. 3.Researchersputpatientsthroughasetofpsychologicalteststodeterminethenegativeconsequencesofsleep________. 4.Toomuch________todirtyaircancausepeopletosufferfromallergiesanddiseasesthatwilleventuallyaffectpeople'shealth. 5.Movingforwardeveninthefaceofgreatdifficultieshasbecomemymostimportant________inmylifesinceithashelpedmeaccomplishsomethingremarkable. 6.Thelawyerproclaimedtheycouldn'tjumptoconclusionsbecauseacceptableconclusionsmustbesupportedby________factsandevidence. 7.Tohelptheemployeesbemorecommunicative,thecompanyisofferingworkshopsforthosewhomaybeprofessionally________butsociallyawkward. 8.Mostparents,infact,aren'tveryhelpfulwiththeproblemsthattheirsonsanddaughtershavein________totheircollegelife. 9.Youcancounthowmanystudentspassedanexam,butpsychologicalandemotionalfeelingscannotbe________measured. 10.Inshort,participationinsportsisextremely________forcollegestudentsnotonlyphysicallybutalsoemotionallyandsocially.
1.Themayordecidedto________hisspeechinordertoleaveenoughtimeforhisaudiencetoraisequestions. 2.Itwasreportedthattherewasavehiclemissingevery20secondsinthe US .Ifthetrendscontinue,expertspredictannualvehicletheftscould________twomillion. 3.Researchersputpatientsthroughasetofpsychologicalteststodeterminethenegativeconsequencesofsleep________. 4.Toomuch________todirtyaircancausepeopletosufferfromallergiesanddiseasesthatwilleventuallyaffectpeople'shealth. 5.Movingforwardeveninthefaceofgreatdifficultieshasbecomemymostimportant________inmylifesinceithashelpedmeaccomplishsomethingremarkable. 6.Thelawyerproclaimedtheycouldn'tjumptoconclusionsbecauseacceptableconclusionsmustbesupportedby________factsandevidence. 7.Tohelptheemployeesbemorecommunicative,thecompanyisofferingworkshopsforthosewhomaybeprofessionally________butsociallyawkward. 8.Mostparents,infact,aren'tveryhelpfulwiththeproblemsthattheirsonsanddaughtershavein________totheircollegelife. 9.Youcancounthowmanystudentspassedanexam,butpsychologicalandemotionalfeelingscannotbe________measured. 10.Inshort,participationinsportsisextremely________forcollegestudentsnotonlyphysicallybutalsoemotionallyandsocially.
有一正弦交流电流,有效值为20A,其最大值为( ),平均值( )。 A: 20√2 , 0 B: 20√2 , 20√2 C: 20 , 0 D: 20√2 , 20
有一正弦交流电流,有效值为20A,其最大值为( ),平均值( )。 A: 20√2 , 0 B: 20√2 , 20√2 C: 20 , 0 D: 20√2 , 20
能正确啮合的一对直齿圆柱齿轮是( )。 A: m1=2㎜,α1=20°;m2=3㎜,α2=20° B: m1=2㎜,α1=20°;m2=3㎜,α2=15° C: m1=3㎜,α1=20°;m2=3㎜,α2=20° D: m1=2㎜,α1=20°;m2=2㎜,α2=15°
能正确啮合的一对直齿圆柱齿轮是( )。 A: m1=2㎜,α1=20°;m2=3㎜,α2=20° B: m1=2㎜,α1=20°;m2=3㎜,α2=15° C: m1=3㎜,α1=20°;m2=3㎜,α2=20° D: m1=2㎜,α1=20°;m2=2㎜,α2=15°
下面是分解质因数的是 A: 4×5=20 B: 20=1×2×2×5 C: 20=3×5+5 D: 20=2×2×5
下面是分解质因数的是 A: 4×5=20 B: 20=1×2×2×5 C: 20=3×5+5 D: 20=2×2×5
混凝土实验室温度为(),相对湿度不低于(),养护室的温度为(),相对湿度不低于()。 A: 20℃±5℃、50%、20℃±2℃、95% B: 20℃±2℃、50%、20℃±1℃、95% C: 20℃±5℃、50%、20℃±2℃、90% D: 20℃±2℃、50%、20℃±1℃、95%
混凝土实验室温度为(),相对湿度不低于(),养护室的温度为(),相对湿度不低于()。 A: 20℃±5℃、50%、20℃±2℃、95% B: 20℃±2℃、50%、20℃±1℃、95% C: 20℃±5℃、50%、20℃±2℃、90% D: 20℃±2℃、50%、20℃±1℃、95%
______=______÷2=______/20=______%=六成五.26:______=______÷2=______/20=______%=六成五.
______=______÷2=______/20=______%=六成五.26:______=______÷2=______/20=______%=六成五.
20=______:2=______%=______成=______小数.12:20=______:2=______%=______成=______小数.
20=______:2=______%=______成=______小数.12:20=______:2=______%=______成=______小数.
水泥实验室温度为(),相对湿度不低于(),养护箱的温度为()。相对湿度不低于() A: 20℃±2℃、50%、20℃±1℃、95% B: 20℃±1℃、50%、20℃±2℃、95% C: 20℃±2℃、50%、20℃±1℃、90%
水泥实验室温度为(),相对湿度不低于(),养护箱的温度为()。相对湿度不低于() A: 20℃±2℃、50%、20℃±1℃、95% B: 20℃±1℃、50%、20℃±2℃、95% C: 20℃±2℃、50%、20℃±1℃、90%
混凝土标准养护温度为()℃ A: 20±2 B: 22±2 C: 20±5 D: 20±1
混凝土标准养护温度为()℃ A: 20±2 B: 22±2 C: 20±5 D: 20±1
水泥实验室温度为(),相对湿度不低于(),养护箱的温度为()。相对湿度不低于() A: 20±1℃、50%、20±1℃、95% B: 20±1℃、50%、20±2℃、95% C: 20±2℃、50%、20±1℃、90% D: 20±2℃、50%、20±1℃、95%
水泥实验室温度为(),相对湿度不低于(),养护箱的温度为()。相对湿度不低于() A: 20±1℃、50%、20±1℃、95% B: 20±1℃、50%、20±2℃、95% C: 20±2℃、50%、20±1℃、90% D: 20±2℃、50%、20±1℃、95%