“Because our book is full, so we cannot entertain any more orders. ” This sentence violates the principle()
A. polite
B. correct
C. concise
D. formal
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What principle does a subject should follow according to the video()
A. Complete
B. Clear
Concise
D. Complicated
重载函数在调用时选择的依据中,错误的是()
A. 函数的参数
B. 参数的类型
C. 函数的名字
D. 函数返回值类型
The insurance is covered _____ 130% of the invoice value against All Risks()
A. on
B. in
C. for
D. against
Choose the correct forms of date writing in the business letter()
A. 2020/1/20
B. January 20, 2020
C. Jan. 20, 2020
D. 20 January 2020