不同职业人群的H·A·A阳性率(%)
α=0.05,X2=16.74,P<0.05。
自由度是()
A.2
B.8
C.9
D.3939
E.3940
参考答案:A
浅反射不包括()
A.直接角膜反射
B.腹壁反射
C.提睾反射
D.跟腱反射
E.间接角膜反射
Getting good marks is about _______ to prepare for and to write exams but not just about ______facts you know.
A.what; what
B.how; that
C.how; what
D.what; which