搜题请搜索小程序“爱下问搜题”
问题 多项选择题

进行混凝土砂石材料用量的计算时，需要具备的条件有（）。

A.混凝土的配制强度

B.混凝土假设湿表观密度

C.原材料的密度

D.水泥、水的用量以及砂率

答案

参考答案：B, C, D

阅读理解与欣赏

文言文阅读。

　　林道人①诣谢公②。东阳③时始总角④，新病起，体未堪劳，与林公讲论，遂至相苦。母王夫人在壁后听之，再遣信⑤令还，而太傅留之。王夫人因自出，云：“新妇少遭家难一生所寄唯在此儿。”因流涕抱儿以归。谢公语同坐曰：“家嫂辞情慷慨，致可传述，恨不使朝士⑥见！”（选自《世说新语》）

【注】①林道人：指晋代和尚支遁，世称林道人、林公。②谢公：谢安，东晋名相，死后追封太傅，世称谢太傅、谢公。③东阳：谢朗，谢安的侄子，曾任东阳太守。其父谢据早亡，下文“家难”即指此事。④总角：儿童头结发成小髻，常用以指代儿童。⑤信：传信的人。⑥朝士：朝廷官员。

1．解释下列划线的词。

（1）东阳时始总角（　　）

（2）再遣信令还（　　）

（3）而太傅留之（　　）

（4）谢公语同坐曰（　　）

2．根据文意，用“/”把文中画线部分断成三个短句。

新妇少遭家难一生所寄唯在此儿

___________________________________________________________

3．王夫人为什么坚持要“流涕抱儿以归”？

___________________________________________________________
查看答案
填空题


A How to Use a Painting Knife 使用画刀的方法
Painting with a knife is a bit like putting butter on bread and produces quite a (1) result to a brush. Painting knives are excellent for producing textured, impasto work and (2) areas of flat colour.
What’s the difference between a palette knife and a painting knife
A palette knife is a long, straight spatula that is used (3) mixing paints and scraping a palette clean. They’re made from metal, plastic, or wood and (4) either be completely straight or have a slightly bent handle. A painting knife has (5) large crank in the handle, which takes your hand away from the painting surface. They (6) in numerous shapes(for example pear-, diamond-, or trowel-shaped) and are used for painting (7) of a brush. The edge of the knife is blunt, so that it doesn’t cut the (8) .
·What shape of painting knife should I use
Different shaped painting knives produce different effects. For example, a short blade produces angular strokes (9)a long blade makes it easy to put down sweeps of colour.
·Why can’t I use a palette knife to paint with
You can. Painting (10) just have the advantage of coming in more angular shapes and with sharper points. And (11) larger crank in the handle means there’s less chance of rubbing your knuckles into wet (12) . If you’re unsure whether you’re going to enjoy painting with a knife, first buy a (13) , plastic palette knife and experiment a bit with this before upgrading to a wood-and-metal knife.
·How do I use painting knife
(14) the handle firmly so you’re got good control. Pick up some paint off your palette (15) the tip, as you’d pick up some butter with a knife. Use the side of the (16) to spread paint across your canvas, or press it onto the canvas, as you (17) spread butter across a slice of bread．It’ll seem strange at first as it’s quite (18) to using a brush. Using just the tip of the blade will produce small dots. (19) the edge of the knife down will produce fine lines. Pressing the blade flat down (20) the paint will produce ridges. Scrape back into the paint to reveal underlying layers (called sgraffito).

查看答案