【单选题】下列化学实验操作中,正确的是( )
C.
稀释浓硫酸时,将水沿量筒壁慢慢注入浓硫酸中,并不断搅拌
【单选题】According to Paragraph 8, Henry Ford's dream came true with his invention of ______.
B.
the development of the assembly line
C.
his ninth car, the Model T
D.
his first self-propelled vehicle
【单选题】Which of the following is NOT true about Doppelganger?
A.
It’s a startup founded by Andrew Littlefield.
B.
Its headquarters is located in San Francisco.
C.
Its newly launched virtual world has the features of nightclubs and billboards.
D.
The business model adopted for its virtual world is search advertising.
【判断题】从银行提取现金时应编制现金收款凭证( )
【简答题】任意两个大于零的自然数相乘,积一定是合数.______.
【单选题】对酒精灯的使用,下列说法正确的是( )
D.
酒精灯的灯焰分为三层,其中外焰温度最高,焰心温度最低
【判断题】从银行提取现金时,应编制现金收款凭证。( )
【单选题】2018 年5月5日是马克思诞辰200周年纪念日,也是马克思的经典著作《共产党宣言》发表170周年。作为无产阶级政党的第一个党纲,《共产党宣言》 ( ) 1 论证了资本主义必然灭亡,社会主义必然胜利的历史必然性 2 实现了科学社会主义从理论到现实的历史性飞跃 3 为科学社会主义的创立奠定了理论基石 4 深刻阐述了马克主义政党的先进品格、政治立场和崇高理想
【单选题】下列化学实验基本操作中,正确的是( )
C.
给试管里的液体加热时,液体体积不超过试管容积的三分之一