【单选题】房屋装修可能引发白血病。经某医院血液科一年多来的初步统计,来医院看白血病的孩子都表现出一个共同的特点,他们大多在发病前半年内,家里进行了房屋的豪华装修,使用的材料包括梅花墙面的油漆、铺地面用的大理石等豪华建材,这样的白血病患儿总数的90%。 以下哪项如果为真,最能加强上述结论?
C.
除了装修对环境的污染,病毒也是引起白血病的主要因素
D.
来医院看白血病的孩子的年龄、父母的工作、体重、身高基本相同
【简答题】A.Physical health may help people with their memory problem. B.People should learn more tricks to help memory when they are old. C.There are other factors leading to the memory loss of elderly people....
【简答题】编制利润表所依据的平衡公式是( )。 A、收入=利润 B、成本费用=利润 C、收入=成本费用 D、收入—成本费用=利润
【判断题】开式齿轮传动应按齿根弯曲疲劳强度设计,按齿面接触疲劳强度校核。 ( )
【单选题】The purpose of the passage is ______.
A.
to introduce the culture of antique clocks
B.
to offer some advice on collecting antique clocks
C.
to compare different ways to make a future profit
D.
to explain convenient and reliable ways of telling time
【判断题】开式齿轮传动应按齿根弯曲疲劳强度设计,按齿面接触疲劳强度校核。
【单选题】______ more and more people may refer to the Internet for up-to-minute news, the newspaper will not disappear.
【单选题】This bus ______ to be able to hold more than 50 people.
【单选题】1992年10月,大陆海协会与台湾海基会达成的重要共识是 ( )。