有挥发性的萜类是( )。 A．单萜 B．二萜 C．三萜 D．四萜 E．多萜

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).

舱内大豆霉烂变质，应由（）负责。

A．船方

B．货主

C．租船人

D．视大豆的霉烂变质原因而定

下列关于恶性黑色素瘤TNM分期中区域淋巴结分期描述中不正确的是（）。

A.4个以上淋巴结转移，或融合的淋巴结转移，或局部淋巴结转移伴有卫星灶转移或第一站淋巴结之前的淋巴转移为N₃

B.2～5个区域淋巴结转移或存在淋巴内转移为N₂

C.无局部淋巴结转移但有卫星灶转移或第一站淋巴结之前的淋巴转移为N₂c

D.一个淋巴结转移且临床隐性转移（镜下转移）为N₁a

E.区域淋巴结无法评价为N_X

患者女，28岁。左手中指掌指关节处掌面被3cm锐器刺伤2小时，查体中指呈伸直位，感觉障碍，手指苍白发凉，Allen试验阳性。

该患者的治疗方案是（）

A.清创后，修复神经，吻合动脉，肌腱二期修复

B.清创后，修复肌腱，吻合动脉，神经二期修复

C.清创后修复屈指肌腱，神经，吻合动脉，缝合创口

D.清创后，缝合伤口，其他组织二期修复

E.清创后，修复肌腱和神经

什么称为油品的干点？