标准货固定式系固设备中与花篮螺丝、绑扎杆等组成一系固系统固定集装箱的设备是：（） ①

—Did you see the new movie directed by that famous director? It’s said to be ___ great fun.

---No, I have been busy repairing all the broken office___ these days.

A．a, equipment

B．the, equipment

C．/, equipments

D．/, equipment

重症肌无力的主要临床特征为（）

A.全身骨骼肌均可无力

B.颅神经支配肌肉的无力多于脊神经支配的肌肉

C.受累骨骼肌的极易疲劳性和短时休息后好转

D.病情波动

E.感染后肌无力加重

Travel is useful to us in at least three ways.

First, by t 小题1: we can enjoy the beautiful scenery (风景) of different place. We can see   many which can be read about in books w 小题2:  our eyes and v 小题3:  some famous cities and interesting places.

S 小题4: , we will meet people with different interests and see strange and different things when we travel. We can get ideas of the conditions and customs(风俗) of o 小题5:   people, taste different foods and local favors(偏爱) if we like. I 小题6: this way, we can understand how other different people live.

Third, travel will help us gain（获得）k 小题7: of geography and history , travel will also help us keep h  小题8:  and strong.

With all these a  小题9: of travel, it is no wonder that travel has now become more p 小题10:   than ever in China.

（10分）两根平行金属导轨固定倾斜放置，与水平面夹角为37°，相距d＝0.5 m，a、b间接一个电阻为R＝1.5 Ω.在导轨上c、d两点处放一根质量m＝0.05 kg的金属棒，bc长L＝1 m，金属棒与导轨间的动摩擦因数μ＝0.5.金属棒与导轨接触点间电阻r＝0.5 Ω， 金属棒被两个垂直于导轨的木桩顶住而不会下滑，如图甲所示．在金属导轨区域加一个垂直导轨斜向下的匀强磁场，磁场随时间的变化关系如图乙所示．重力加速度g＝10 m/s².(sin 37°＝0.6，cos 37°＝0.8)．求：

(1)0～1.0 s内回路中产生的感应电动势大小；

(2)t＝0时刻，金属棒所受的安培力大小；

(3)在磁场变化的全过程中，若金属棒始终没有离开木桩而上升，则图乙中t₀的最大值；

(4)通过计算在图中画出0～t_0max内金属棒受到的静摩擦力随时间的变化图象．

急性心肌梗死并发室性心动过速（）

A.异搏定

B.洋地黄

C.阿托品

D.利多卡因

E.胺碘酮下列疾病时宜选择的治疗药物为