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【判断题】
凡1吨货物的积载因数小于1.133立方米或40立方英尺的,计算运费时应使用重量吨。
A.
正确
B.
错误
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【单选题】孙子说: 地生度,度生量,量生数,数生称,称生胜。故胜兵若以镒称铢,败兵若以铢称鎰。称胜者之战民也,若决积水于千仞之谿者,形也。这里,“镒”和“铢”都是古代重量单位:镒为两的24倍,两为铢的24倍,所以,镒为铢的()倍。
A.
576
B.
48
C.
96
D.
192
【简答题】根据句意及首字母提示补全单词。 1. She is only 3 years old, but she can r_____ many poems. 2. My aunt is a n_____ in a hospital. She takes good  care of her patients. 3. Please make a d_____ with your partner. 4. At ...
【单选题】向量(2,-3,1)和向量(1,-1,3)的数量积(也称“点积”)为( )
A.
8
B.
2
C.
3
D.
4
【单选题】向量(2,-3,1)和向量(1,-2,0)的数量积(也称“点积”)为( )
A.
8
B.
2
C.
3
D.
4
【简答题】She is only 4 years old but she can play the piano with .
【简答题】完形填空。 The life of the 'stay-home' girl Mary is only 12 years old but she doesn't live with her parents. Her parents live far away and she has to 1 after her little brother. Mary is one of the 'stay-ho...
【单选题】发达国家已有( )的儿童属于特殊教育的服务对象。
A.
10%
B.
15%
C.
20%
D.
25%
【单选题】向量(3,-1,-2)和向量(1,2,-1)的数量积(也称“点积”)为( )
A.
8
B.
2
C.
3
D.
4
【简答题】选择适当的单词并用正确形式填空,使句子意思完整。 he pupil friends Canada teacher 1. My name's Kate. I'm from ________. 2. Sarah is a ________. She is only 8 years old. 3. This is Mike. ________ is a boy. 4. This is M...
【多选题】数量积也称为()
A.
外积
B.
点积
C.
内积
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