学会拒绝不良诱惑,需要我们[ ]
A、认识不良诱惑,
B 、有科学的态度,
C 、想出各种办法拒绝不良诱惑,
D、 坚强的意志。
答案:C
下列哪种疾病不会引起血清丙氨酸氨基转移酶(ALT、GPT)升高( )。
A.传染性肝炎
B.急性心肌梗死
C.传染性单核细胞增多症
D.严重烧伤
E.慢性肾炎
Hypothesis test can be divided into one-tailed test and two-tailed test. A onetailed hypothesis test may not have a:()
A. "Iess than or equal to" alternative hypothesis.
B. "not equal to" alternative hypothesis.
C. "greater than" alternative hypothesis.