题目内容
【题目】关于物理量或物理量的单位，下列说法中不正确的是（ ）
A. 在力学范围内，国际单位制规定长度、质量、时间为三个基本物理量
B. 后人为了纪念牛顿，把“牛顿”作为力学中的基本单位
C. 1N/kg=1m/s2
D. “米”、“千克”、“牛顿”都属于国际单位制的单位
【答案】B
【解析】试题分析：在力学范围内，规定长度、质量、时间为三个基本物理量，其中的单位：“米”、“千克”、“牛顿”都属于国际单位制的基本单位，“牛顿”作为力学中力的单位，是国际单位制的导出单位，不是基本单位，由单位制可知：1N/kg =1m/s2，故选项ACD正确，B错误；故选B．
每课必练系列答案【题目】【2015·福建】C
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【1】One of the benefits mentioned in, the advertisement is .
A.a free flight to any destination in the world
B.30% off any book purchased at Ruby Bookstore
C.a free bowl of dessert at any restaurant at the airport
D.a discount on any course at Tanya Language School
【2】Which of the following bookings may receive the most benefits?
A.
Booking date | Departure date |
September 13 | September 18 |
B．
Booking date | Departure date |
September 2 | September 12 |
C.
Booking date | Departure date |
August 15 | September 4 |
D.
Booking date | Departure date |
August 16 | September 8 |
【3】Which of the following is TRUE according to the advertisement?
A.You need to pay$50 to sign up a child for the club.
B.Club members enjoy free travel insurance for any flight.
C.The advertisement is intended for students of all ages.
D.Any child must be accompanicd by at least one paying adult.
