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【单选题】
下列以登记作为抵押权生效条件的是（ ）。A.
招标方式取得的荒地的土地承包经营权
B.
企业的原材料
C.
医院的医疗卫生设施
D.
正在建造的航空器
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举一反三
【单选题】When a ship in loaded condition floats at arbitrary water line, its displacement is to the relevant mass of water displaced by the ship.
A.
equal
B.
larger
C.
smaller
D.
equivalent
【单选题】Ice floats because it is not as dense as water.
A.
冰可漂浮在水面上是因为冰不像水那么重。
B.
冰浮起是因为它的密度比水的密度小。
C.
冰可漂浮是因为冰不像水那么稠密。
【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
【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
D.
laid, lay, lam, lies
【单选题】He had a strange hairstyle and he instantly became the ________ of attention the moment he stepped into the classroom.
A.
aim
B.
focus
C.
direction
D.
point
【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
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