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【单选题】
混凝土板构件蒸养混凝土表面成型压面后先预养护个()小时，通蒸汽养护，冬季应及时覆盖，养护期间注意避免触动混凝土成型面。A.
0.5
B.
1
C.
1.5
D.
2
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举一反三
【单选题】At BCF, the graduate selection process
A.
allows applicants to demonstrate their skill to the company.
B.
is based on success at three individual interviews.
C.
lasts as long as the recruiter thinks it should.
【单选题】The best job is __________ that uses your skill in doing something together with your interest in the subject.
A.
it
B.
the one
C.
that
D.
one
【单选题】We were swimming in the lake suddenly the storm started.
A.
When
B.
while
C.
until
D.
before
【单选题】电路如图 3 - 11 所示,已知电源电动势 E 1 = 6 V 、 E 2 = 1 V , 电源内阻不计, 电阻 R 1 = 1Ω , R 2 = 2Ω , R 3 = 3Ω。则 R 3 上的电流。
A.
3A
B.
2A
C.
1A
D.
5A
【单选题】已知集合A={x|x 2 -4x+3≤0}，集合B为函数 y= x-2 的定义域，则A∩B等于（ ）
A.
{x|1≤x≤2}
B.
{x|2≤x≤3}
C.
{x|x≥2}
D.
{x|x≥3}
【单选题】To memorize names of people is not only an important social skill but also a highly recommended_____.
A.
reference
B.
plot
C.
resource
D.
practice
【单选题】By “people skill” the author means _____________.
A.
the inclination to be considerate of others
B.
the capacity to look into other people’s minds
C.
the ability to establish good interpersonal relation
D.
the skills of dealing with different kinds of people
【单选题】We were swimming in the lake _______ suddenly it began to rain heavily.
A.
when
B.
while
C.
until
D.
before
【简答题】如图3-6所示的电路中,已知电源电动势 E=12V ,电源内阻不计,电阻 R 1 、R 2 两端的电压为2V和 6V ,极性如图所示。那么电阻 R 3 、R 4 、R 5 两端的电压大小分别为 、 和 。
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