常用的表面粗糙度测量仪器有哪几种？分别能测出哪种评定参数？评定范围有多大？

The lock on the front door was one which ______.

A．needed a piece of wire to open it

B．could be opened from outside without a key

C．couldn't be opened without a key

D．used a knob instead of a key

The lock on the front door was one which ______.

A．needed a piece of wire to open it

B．could be opened from inside without a key

C．couldn't be opened without a key

D．used a knob instead of a key

A.locking

B.being locked

C.to lock

D.to have locked

. My name is Sheryl London, and I would like to show you what products Intelliverse is creating to make your home safe and secure. First, we have a tiny gadget called the Safesensor, which will automatically lock the front door of your home. If you go to bed and leave the door accidentally unlocked, Safesensor is programmed to automatically lock the door at a certain time of your choosing each evening. Another new product Intelliverse is quite proud of is the Quicklock. Designed for bicycles, the Quicklock allows users to keep their bicycles safe while at work or in school. The third product is the Keyvault. The Keyvault is a small device which stores house and car keys on the back of a person's mobile phone. The key chain will be soon obsolete thanks to the Keyvault.

What is the main purpose of the talk？

A．To showcase the new products.

B．To raise money for charity.

C．To instruct how to repair a front door.

D．To offer information to find missing keys.

Which of the italicized parts is used as an object complement？(2014)

A．The front door remained locked.

B．The boy looked disappointed.

C．Nancy appeared worried.

D．He seemed to have no money left.

Which of the following italicized parts is used as an object complement？

A．The front door remained locked.

B．The boy looked disappointed.

C．Nancy appeared worried.

D．He seemed to have no money left.

Please remember (lock) ______ the door when you leave.

Since she was alone, she opened the door ______ , leaving the chain lock fastened.

A．warily

B．consciously

C．audaciously

D．recklessly