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【单选题】(2019·湘潭)用托盘天平测物体质量前,调节横梁平衡时,发现指针指在如图所示位置,这时应该
A.
将左端平衡螺母向右旋进一些
B.
将右端平衡螺母向左旋进一些
C.
将右端平衡螺母向右旋出一些
D.
将游码向右移动
【单选题】An old woman was badly hurt in ______ the police describe as an apparently motiveless attack.
A.
that
B.
which
C.
what
D.
whatever
【单选题】用托盘天平测物体质量前,调节横梁平衡时,发现指针在分度盘中线的左侧,这时应该( ) A .将游码向左移动 B .将右端平衡螺母向左旋进一些 C .将游码向右移动 D .将右端平衡螺母向右旋出一些
A.
B.
C.
D.
D
【单选题】Which of the following statements is NOT mentioned in the passage?
A.
Malaria is under attack in a number of countries.
B.
Some types of mosquitoes have become resistant to the current sprays.
C.
New poisons have been put into wide use with the new science.
D.
One of human's challenges is to win the campaigns against mosquitoes.
【单选题】下列数字中有效数字的位数为4位的是（ ）。
A.
[OH - ]=3.750 ×10 -4 mol/L
B.
ω (Mn)=1.4032
C.
pH=10.53
D.
[H + ]=0.0030mol/L
【单选题】下列数字中有效数字的位数为4位的是（ ）。
A.
m（KHP）=0.5736g
B.
ω (Mn)=1.4032
C.
pH=10.53
D.
[H + ]=0.0030mol/L
【单选题】According to the passage, which of the following is the major lesson learned from the attacks on the London Underground?
A.
The government should propose new laws stopping the Islamic diaspora.
B.
The British army should pull out from the Iraqi war.
C.
The government should guard against the Islamic bombers.
D.
Europeans should draw their attention to the Muslim minority.
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