题目内容

流体在等直径的导管中作稳态流动时,由于流动有摩擦阻力损失,因此流体的流速沿管长而逐渐变小。( )

A. 对
B. 错

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更多问题

Which is another word for quotation mark?

A. inverted comma
B. quotation sign
C. speech mark

If a word that's too long to fit on a line is broken into two parts, the first part ends with.

A. an ellipsis mark
B. a backslash
C. a hyphen

What is the punctuation mark in they're and children's called?

A. apostrophe
B. possessive
C. super comma

Which CANNOT replace the brackets in this sentence? "May Day (also Labor Day or Workers' Day) is celebrated on May 1."

A. commas
B. dashes
C. colons

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