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【单选题】
如图 所示,平面汇交力系中四力之间的关系是( )。A.
F 1 + F 2 + F 3 + F 4 = 0 ； ( F 为粗体 )
B.
F 1 + F 3 = F 4 － F 2 ； ( F 为粗体 )
C.
F 1 = F 2 + F 3 + F 4 ； ( F 为粗体 )
D.
F 1 + F 2 = F 3 + F 4 。 ( F 为粗体 )
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举一反三
【多选题】(Please select all correct answers. There might be more than one correct answer.) Which of the following is NOT a good design of PPT?
A.
including detailed information to show full preparation
B.
using fancy animations to attract audience’s attention
C.
consistently using Times New Roman throughout the PPT
D.
following the 6x7 rule for each slide
【多选题】Please select the works written by Joseph Conrad. (Choose all that apply.)
A.
Lord Jim
B.
The Great Gatsby
C.
Apocalypse Now
D.
Heart of Darkness
【简答题】A) while B) whenever C) or D) and
【简答题】A．Because B．Always C．Nevertheless D．Whenever
【单选题】(Please select all correct answers. There might be more than one correct answer.) When writing a paragraph, you should...
A.
include a variety of details to enrich the content of the paragraph
B.
include more than one main idea to enhance the depth of the paragraph
C.
reveal the main idea after details and examples to arouse interest
D.
reveal the main idea in the first few sentences
E.
conclude the paragraph by introducing a new idea.
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