【单选题】若用 8 位 0 , 1 表示一个二进制数,其中 1 位即最高位为符号位,其余 7 位为数值位。 的原码、反码和补码表示,正确的是( )。
A.
10010010 , 11101101 , 11101110
B.
00010010 , 01101101 , 01101110
C.
10010010 , 11101110 , 11101101
D.
10010010 , 01101101 , 01101110
【单选题】When the temperature drops to 0℃, ice ________ on the surface of water. [ ]
【单选题】The detective was greeted with an unpleasant smell of ______ air when he stepped into the long locked room.
【单选题】Ice is _____ than water because _____.
A.
less dense; frozen water maintains more hydrogen bonds than liquid water
B.
less dense; liquid water maintains more hydrogen bonds than frozen water
C.
denser; frozen water maintains more hydrogen bonds than liquid water
D.
denser; liquid water maintains more hydrogen bonds than frozen water
E.
denser; frozen water cannot hydrogen bond
【单选题】若用8位0,1表示一个二进制数,其中1位即最高位为符号位,其余7位为数值位。 的原码、反码和补码表示,正确的是
A.
10010010,01101101,01101110
B.
10010010,11101101,11101110
C.
10010010,11101110,11101101
D.
00010010,01101101,01101110
【简答题】A water B rain C stone D ice
【单选题】The boy ______ when he said that he ______ the eggs ______ by the hen in the closet before he ______ down to have a rest.
A.
was lying, had laid, laid, lay
B.
had laid, lay, laid, was lying
C.
lay, was lying, lain, lay
【单选题】若用8位0,1表示一个二进制数,其中1位即最高位为符号位,其余7位为数值位。 的原码、反码和补码表示,正确的是
A.
10001111,11110000,11110001
B.
00001111,01110000,01110001
C.
00001111,00001111,00001111
D.
00001111,01110001,01110000