If the square root of t is a real number, is the square root of t positive?
(1) t>0
(2) t2>0
请指出下列秩和检验的结果哪个是错误的A.配对计量资料n= 12,T+ =7,T_=71.查得T0.05 =13~ 65,P<0. 05B.配对计量资料n=8,T+=12,T_=24,查得T0.05 =3~ 33,P<0. 05C.两组计量资料,n1= 12,n2=10,T1= 173,T2=80,查得T0.05=84~146,P<0. 05D.两组计量资料n1= 10,n2=10,T1= 55,T2=155,查得T0.05=78~132,P<0. 05E.两组计量资料n1=9,n2=13,T1=58,T2 =195,查得T0.05 =73~134,P <0. 05
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对于二维稳态导热过程,如果物性参数为常数,t1、t2、t3和t4分别为四周四点温度,t5为中心节点温度,则均匀网格有限差分的内部节点方程()A、t1+t2+t3+t4-t5=0;B、t1+t2+t3+t4-4t5=0;C、t1+t2+t3+t4-6t5=0;D、t1+t2+t3+t4-2t5=0
In a test database, you issue the SELECT … INTO OUTFILE statement to create a file with your t1 table data. You then TRUNCATE this table to empty it.() Mysql> SELECT * INTO OUTFILE '/tmp/t1.sql' from t1; mysql> TRUNCATE t1;A、$ mysqladmin – u root – p – h localhost test – restore /tmp/t1.sqlB、Mysql> INSERT INTO t1 VALUES FROM '/tmp/t1.sql'C、$ mysql – u root – p – h localhost test < /tmp/t1.sqlD、Mysql> LOAD DATA INFILE '/tmp/t1.sql' INTO TABLE t1E、$ mysqlinport – u root – p – h localhost test /tmp/t1.sql
男性,58岁。已诊断为右肺鳞癌,癌灶3.3cm×3.6cm,伴右侧肺门淋巴结转移,根据TNM分期应属于()。A、T1,N0,M1(Ⅰ期)B、T1,N1,M(Ⅱa期)C、T2,N1,M0(Ⅱb期)D、T2,N1,M1(Ⅳ期)E、T2,N2,M0(Ⅲa期)
一物体从t0=0时刻开始做匀减速直线运动,发生一段位移所用时间为t,设位移中点时刻为t1,速度为v1,时间中点时刻为t2,速度为v2,下列说法正确的是()A、t1=t2,v1=v2B、t1>t2,v1>v2C、t1<t2,v1<v2D、t1<t2,v1>v2
肺癌国际TNM分期中的Ⅲa期是指()A、T2 N1 M0B、T3 N0 M0C、T2 N2 M0D、T4 N0 M0E、T4 N1 M0
国际抗癌联盟(UICC)提出的食管癌TNM分期标准,下列不正确的是()A、Ⅰ期:T1N0M0B、Ⅱa期:T2~3N0M0C、Ⅱb期:T1~2N1M0D、Ⅲ期:T3~4N1M0E、Ⅳ期:T3~4N1M1