电气照明中，经常会提到T5、T8、T12荧光灯管。此处T5等符号的准确含义是（）。

[单选题]教室照明推荐选用T5、T8型直管荧光灯。布灯原则应（）。A . 与学生主视线平行B . 尽可能安装在课桌间通道的上方且距桌面垂直距离不小于2mC . 宜设置局部照明D . 黑板上的垂直照度宜高于水平照度值

[单选题]在不更换镇流器的情况下，用T8细荧光灯管更换T12粗荧光灯管，可节电（）。A .10%；B .20%；C .30%；D .40%

[单选题](T5)A．OUTB．GO FORC．BUT FOR A.NOT FOR OUR NEEDS, MIND YOU,(T1)______OUR DEMANDSB．IF YOU(T2)______A MASTER"S DEGREEC．YOU CAN SUCCESSFULLY DROP(T3)______IN GRADE SCHOOL GET A HIGH SCHOOL DIPLOMA, AT LEAST WITHOUT THAT, YOU ARE OCCUPATIONALLY DEAD, UNLE

[单选题](T5)A．SEEKB．LOOKEDC．PART A.TAKING(T1)______IN DANGEROUS SPORTS AND ACTIVITIESB．WHO HAVE(T2)______FOR ADVENTUREC．WHO(T3)______AN IMMEDIATE EXCITEMENT FROM A RISKY ACTIVITY AROUND THE WORLD MORE AND MORE PEOPLE ARE(T4)______.OF COURSE, THERE HAVE ALWAY

[单选题](T5)A．HANDLEB．ONC．CONTINUED TO A.THE TREND WAS NATURALLY MOST OBVIOUS IN THOSE AREAS OF SCIENCE BASED ESPECIALLY(T1)______A MATHEMATICAL OR LABORATORY TRAININGB．AMATEURS, ON THE OTHER HAND, HAVE(T2)______PURSUE LOCAL STUDIESC．ONE MAN COULD CONTINUE T

[单选题](T5)A．FORM.B．ACCOUNTC．ISSUED A.USUALLY MADE IN THE(T1)______OF A CHECKB．A TERMINATION NOTICE SHOULD BE(T2)______BY THE PERSONNEL DEPARTMENTC．PAYROLL CHECKS MAY BE DEPOSITED DIRECTLY IN THE EMPLOYEE"S CHECKING(T3)_______ THE PAYROLL REGISTER CONSTITU

[单选题](T5)A． DEPENDSB．ESSENTIALC．DISCOURAGED A.THE CHILD GETS(T1)______B．THIS(T2)______ON INTERACTIONC．IS(T3)______TO THE GROWTH BUT SPEECH HAS TO BE INDUCED, AND(T4)______BETWEEN THE MOTHER AND THE CHILD,WHERE THE MOTHER RECOGNIZES THE SIGNALS IN THE CHIL

[单选题](T5)A．TO OBTAINB．MADE OFC．IS WORTH A.IT IS CHEAPER(T1)______SILVERB．THE COINS WERE ACTUALLY(T2)______SILVERC．THE SILVER IN COINS(T3)______MUCH MORE LESS THAN 40 YEARS AGO IN THE UNITED STATES, IT WAS COMMON TO CHANGE A ONE-DOLLAR BILL FOR A DOLLAR"S

[单选题]有关脊髓节段T5～8说法正确的是（）。A . 与相同序数椎骨同高B . 比相同序数椎骨高2个椎体C . 比相同序数椎骨高3个椎体D . 举例第7胸段与第5胸椎体对应E . 位于第3～6胸椎水平

[单选题]有关脊髓节段T5～8说法正确的是（　　）。A.与相同序数椎骨同高B.比相同序数椎骨高2个椎体C.比相同序数椎骨高3个椎体D.举例第7胸段与第5胸椎体对