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【单选题】
用水银管压差计测水平A、B两点压差，读数为150mmHg，水的密度为1000kg/m3，则两点压力差Δp=（ ）Pa。A.
21522
B.
20522
C.
19522
D.
18522
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举一反三
【单选题】The student, ＿＿＿＿whom all the teachers are pleased,is very strict ＿＿＿himself ＿＿＿ everything.
A.
to； with； in
B.
with； with； in
C.
with； at； with
D.
at； with； at
【简答题】一国某年的名义GDP为1500亿美元，当年的实际GDP为1200亿美元，则GDP折算指数等于( )。 A．125% B．150% C．100% D．180%
【单选题】Whom does the student refer to when he says 'he'?
A.
The author of the text.
B.
The student's friend.
C.
The Internet article's author.
D.
Professor King.
【简答题】Whom should a student go to if he or she has any questions? The student should contact ______.
【单选题】Whom does the student refer to when he says 'he'?
A.
The author of the text.
B.
The student's friend.
C.
The Internet article's author.
D.
Professor Kin
【单选题】Kevin is the only student in the class ______failed in the exam.
A.
who
B.
that
C.
which
D.
whom
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