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【单选题】
棉花保温性能好,主要是因为( C )。A.
棉纤维素导热系数小
B.
棉花中含有相当数量的油脂
C.
棉花中含有大量空气,而空气的运动又受到极为严重的阻碍
D.
棉花白色,因而黑度小
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【简答题】阅读理解。 Like many people you may be dreaming of a career as a rock and roll star. There are two ways to go about getting one. First there is the traditional (传统的) way. Find some friends and form a group...
【单选题】People can live for many days without food, but two or three days without water may ___ death
A.
result in
B.
result from
C.
carry away
D.
take away
【单选题】已知R0=0x12345678,R1=0x300,在小端存储格式下,执行以下语句之后,R2=( ) STR R0, [R1] LDRB R2, [R1]
A.
0x12
B.
0x34
C.
0x56
D.
0x78
【单选题】已知str_1 = '12345678dfggrytergrg',想获取最后3个元素,以下正确的是()。
A.
str_1[-3:]
B.
str_1[-4:]
C.
str_1[18:20]
D.
str_1[17:20]
【单选题】Attackers in China’s Xinjiang region crashed two cars into shoppers at a market in May, 31 people.
A.
killed
B.
to kill
C.
killing
D.
being killed
【简答题】Multitasking People who multitask all the time may be the worst at doing two things at once, a new research suggests. The findings, based on performances and self-evaluation by about 275 college stude...
【单选题】就取得操作数的速度而言，下列寻址方式中速度最快的是 ，速度最慢的是 ，不需要访存的是 ；A.直接寻址 B,间接寻址， C。立即寻址
A.
A,B,C
B.
C,A,B
C.
C,B,B
D.
C,B,C
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