单项选择题
根据《房屋建筑与装饰工程工程量计算规范》，实心砖墙的墙体高度计算，错误的计算方法是（）。
A.内、外山墙应按其平均高度计算
B.女儿墙应从屋面板下表面算至女儿墙顶面
C.围墙高度应算至压顶上表面，若有混凝土压顶时算至压顶下表面
D.内墙高度当无屋架时算至天棚底另加100mm
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单项选择题
假设某程序语言的文法如下： S→a|b|(T) T→TdS|S 其中，VT={a，b，d，(，))；VN={S，T}，S是开始符号。考察该文法，句型(Sd(T)db)是S的一个(28)。 其中(29)是最左素短语，(30)是该句型的直接短语。(74)
A.最左推导
B．最右摊导
C．规范推导
D．推导 -
单项选择题
The lack of printing regulations and the unenforceabiliy of British copyright lawin the American colonies made it possible for colonial printers occasionally to act aspublishers. Although they rarely undertook major publishing project because it wasdifficult to sell books as cheaply as they could be imported from Europe, printers in(5) Philadelphia did publish work that required only small amounts of capital, paper, andtype. Broadsides could be published with minimal financial risk. Consisting of only onesheet of paper and requiring small amounts of type, broadsides involved lower investmentsof capital than longer works. Furthermore, the broadside format lent itselt to subjects ofhigh, if temporary, interest, enabling them to meet with ready sale. If the broadside printer(10) miscalculated, however, and produced a sheet that did not sell, it was not likely to be amajor loss, and the printer would know this immediately, There would be no agonizingwait with large amounts of capital tied up, books gathering dust on the shelves, and creditorsimpatient for payment In addition to broadsides, books and pamphlets, consisting mainly of political tracts,(15) catechisms, primers, and chapbooks were relatively inexpensive to print and to buy.Chapbook were pamphlet-sized books, usually containing popular tales, ballads, poems,short plays, and jokes, small, both in formal and number of pages, they were generallybound simply, in boards (a form. of cardboard) or merely stitched in paper wrappers (asewn antecedent of modem-day paperbacks). Pamphlets and chapbooks did not require(20) fine paper or a great deal of type to produce they could thus be printed in large, costeffectiveeditions and sold cheaply. By far, the most appealing publishing investments were to be found in small books thathad proven to be steady sellers, providing a reasonably reliable source of income for thepublisher. They would not, by nature, be highly topical or political, as such publications(25) would prove of fleeting interest. Almanacs, annual publications that contained informationon astronomy and weather patterns arranged according to the days, week, and months ofa given year, provided the perfect steady seller because their information pertained to thelocale in which they would be used Which aspect of colonial printing does the passage mainly discuss?A．Laws governing the printing industry.B．Competition among printersC．Types of publications producedD．Advances in printing technology
A.
Chapbook
B.
C.Laws
D.
B．Competition
E.Types
F.Advances -
单项选择题
地面涂料与内墙涂料的不同，主要是地面涂料应具有（）。
A.耐碱性
B.耐水性
C.耐磨性
D.便于施工性
